Author: Jessica.F

Electric Literature of 1009102-44-6, A common heterocyclic compound, 1009102-44-6, name is 1-(4-Chlorophenyl)cyclopropanamine hydrochloride, molecular formula is C9H11Cl2N, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

l-(4-chlorophenyl)cyclopropanamine hydrochloride (25 mg, 0.123 mmol) was added to a stirring solution of HATU (59 mg, 0.154 mmol), DIEA (54 mu, 0.308 mmol), and 3-(2-(4-fluorophenyl)-3- (methylcarbamoyl)benzofuran-5-yl)benzoic acid (40 mg, 0.103 mmol) in DMF (1 mL) at rt. It was allowed to stir for 1 hour. The mixture was diluted with EtOAc and washed with sat NaHC03, and sat NaCl. The organic phase was dried over Na2S04, filtered and concentrated and was purified by preparative reverse phase HPLC on a C18 column using a suitably buffered H20/CH3CN gradient, and concentrated to give the titled compound (8 mg, 14%). 1H NMR (500 MHz, DMSO-d6) d ppm 9.37 (1 H, s), 8.46 – 8.55 (1 H, m), 8.22 (1 H, s), 7.95 – 8.05 (2 H, m), 7.86 – 7.95 (3 H, m), 7.74 – 7.83 (2 H, m), 7.59 (1 H, t, J=7.63 Hz), 7.38 – 7.44 (2 H, m), 7.30 – 7.36 (2 H, m), 7.20 – 7.28 (2 H, m), 2.86 (3 H, d, J=4.58 Hz), 1.26 – 1.36 (4 H, m). LC-MS retention time: 1.92 min; m/z (MH+): 539. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Phenomenex-Luna lOu CI 8 3.0x50mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220nM. The elution conditions employed a flow rate of 5 ml/min , a gradient of 100% solvent A / 0% solvent B to 0% solvent A / 100% solvent B, a gradient time of 2 min, a hold time of 1 min, and an analysis time of 3 min where solvent A was 10% MeOH / 90% H20 / 0.1% trifluoroacetic acid and solvent B was 10% H20 / 90% MeOH / 0.1% trifluoroacetic acid. MS data was determined using a Micromass Platform for LC in electrospray mode. Additional HPLC method: Solvent A = 5% CH3CN/95%H2O/0.1% TFA, Solvent B = 95% CH3CN/5% H2O/0.1% TFA, Start %B = 10, Final %B = 100, Gradient time = 15 min, Stop time = 18 min, Flow Rate = 1 ml/min. Column: Waters Sunfire C-18, 4.6 x 150 mm, 3.5 mm, Rt = 14.56 min, purity = 99%; Column: Waters Xbridge Phenyl column 4.6 x 150 mm, 3.5 mm, Rt = 13.20 min, purity = 97%.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; YEUNG, Kap-Sun; PARCELLA, Kyle, E.; BENDER, John, A.; BENO, Brett, R.; GRANT-YOUNG, Katharine, A.; HAN, Ying; HEWAWASAM, Piyasena; KADOW, John, F.; NICKEL, Andrew; WO2011/112191; (2011); A1;,
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Electric Literature of 2770-01-6, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2770-01-6, name is 4-Chloro-1H-imidazo[4,5-c]pyridine belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

The chiral cyclopentenyl moiety 5 (below) was prepared from D-ribose in 8 steps following a previously reported synthetic method via a chiral induction, a regioselective protection of hydroxy group and ring-closing metathesis with 0.1 mole% of the 2nd generation Grubbs catalyst as key steps. 10; The other key intermediate 7 was synthesized according to the previously reported procedure11 from commercially available 4-amino-2-chloropyridine (6) in 4 steps (overall 54% yield) as shown in Scheme 1. Mitsunobu reaction of 7 with 5 provided a mixture of the N9- and N7-regioisomers (8:9 = 2:1) in 94% yield. The separation of the desired product (8) from the reaction mixture was difficult by silica gel column [isolated yields: 20% (8) and 20% (9), respectively]. The ratio of the two isomers was determined by 1H-NMR, and their configuration was identified by Nuclear Overhouser Effect (ID-NOE), which indicated the interaction between the C1 ‘-H and the aromatic C3-H of compound 8, whereas the same effect was not present in compound 9.

The synthetic route of 4-Chloro-1H-imidazo[4,5-c]pyridine has been constantly updated, and we look forward to future research findings.

Reference:
Patent; UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC.; WO2007/47793; (2007); A2;,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 17601-75-1, name is 2,4-Dichloro-5-methylaniline, A new synthetic method of this compound is introduced below., Quality Control of 2,4-Dichloro-5-methylaniline

Comparative Example 2-11-(2′,2′,2′-Trichloroethyl)-2,4-dichloro-5-methylbenzene; At room temperature, 7.04 g [0.04 mol] of 2,4-dichloro-5-methylaniline are introduced into 28 ml of conc. hydrochloric acid, the mixture is cooled to -5 to 0 C. and a solution, cooled to 0 C., of 3.31 g [0.048 mol] of NaNO2 in 80 ml of water is added dropwise within 60 minutes. Subsequently, the mixture is stirred at -5 to 0 C. for 15 minutes. Subsequently, 3.23 g [0.024 mol] of copper(II) chloride are added. To this mixture is added dropwise, at 0 C. within 30 minutes, a solution of 38.8 g [0.4 mol=10 molar equivalents] of vinylidene chloride in 130 ml of acetone. The mixture is allowed to come to room temperature with good stirring and left to react for another 3 hours. The reaction mixture is diluted with 100 ml of water and extracted twice with 70 ml each time of MTBE. The combined organic phases are washed with 30 ml of water, dried over sodium sulphate and concentrated under reduced pressure. This gives 12.3 g of oil which, according to GC-MS, contains 64.05 area % of 1-(2′,2′,2′-trichloroethyl)-2,4-dichloro-5-methylbenzene. This corresponds to a yield of 67.4% of theory.The GC-MS shows, as by-products, 5.7 area % of Sandmeyer product and 23.8 area % of 1,5-dichloro-2-methyl-4-(2′,2′,4′,4′,4′-pentachlorobutyl)benzene.

The synthetic route of 17601-75-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Bayer CropScience AG; US2010/234651; (2010); A1;,
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Electric Literature of 67330-62-5, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 67330-62-5 as follows.

Example 4Synthesis of M-MIPACDEAIn a 5 litre flanged reaction vessel were placed a mixture of 137 ml of sulphuric acid, 580 ml water and 313 ml propan-2-ol. To this were added 250 grams of 3-chloro-2,6-diethylaniline and 203 grams of 2-methyl-6-isopropylaniline. The flask was provided with a stirrer, dropping funnel and condenser and the temperature was raised to 60 C.Formalin solution (35% w/w), 120 ml, was added over a period of 1 hour and heating was subsequently continued for 5 hours. The vessel contents were cooled and neutralised with ammonia solution.The product was extracted into ethyl acetate, washed with water, dried over sodium sulphate, filtered and rotary evaporated to give 467 grams of an amber liquid.Analysis by HPLC showed that the desired hybrid methylene bis-aniline M-MIPACDEA is present at 63% of the total, together with 15% of M-MIPA and 21% of M-CDEA.The liquid showed no sign of crystallisation over 3 months.

According to the analysis of related databases, 67330-62-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; HEXCEL COMPOSITES LIMITED; US2012/316262; (2012); A1;,
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Synthetic Route of 179897-90-6, A common heterocyclic compound, 179897-90-6, name is 1,3-Dibromo-2-chloro-5-fluorobenzene, molecular formula is C6H2Br2ClF, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

EXAMPLE 185 6-(3-Bromo-2-chloro-5-fluorophenyl)-1,2-dihydro-2,2,4-trimethylquinoline (Compound 285, structure 4 of Scheme II, where R1 =3-bromo-2-chloro-5-fluorophenyl) This compound was prepared according to General Method 2 (EXAMPLE 9) from Compound 9 (143.3 mg, 0.45 mmol) and 1-chloro-2,6-dibromo-4-fluorobenzene (129.9 mg, 0.45 mmol). The crude material was purified by flash column chromatography (50 mL silica, hexane) followed by reverse phase preparatory TLC (1000 mL ODS, 80% methanol/water) to afford 4.3 mg (3%) of Compound 285. Data for Compound 285: 1 H NMR (400 MHz, acetone-d6) 7.50 (dd, J=7.8, 3.0, 1H), 7.19 (dd, J=9.2, 3.0, 1H), 7.10 (d, J=2.0, 1H), 7.03 (dd, J=8.1, 2.0, 1H), 6.55 (d, J=8.3, 1H), 5.61 (s, 1H), 5.37 (s, 1H), 1.97 (s, 3H), 1.29 (s, 6H).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Ligand Pharmaceuticals Incorporated; US5688810; (1997); A;; ; Patent; Ligand Pharmaceuticals Incorporated; US5696127; (1997); A;,
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Some common heterocyclic compound, 120758-03-4, name is 2-Chloro-3,5-dimethoxyaniline, molecular formula is C8H10ClNO2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Formula: C8H10ClNO2

Step 4: Synthesis of Intermediate 5 [00522j Into a sealed vessel was added Intermediate 4 (1.50 g, 8.00 mmol) in DMA (5 mL, 53.3 mmol), followed by DIPEA (820 tl, 8.80 mmol). The reaction mixture was allowed to stir for 10 mm. at ambient temperature, and 2,4-dichloro-5-(iodomethyl)pyrimidine from Example 1 (2.31 g, 8.00 mmol) was added. The reaction mixture was allowed to stir at 60 C for 7.5 h, then 16 h at ambient temperature. The reaction mixture was concentrated and azeotroped several times with toluene. EtOAc was added and the organic layer washed with brine (3 x). The organic layers were dried with sodium sulfate, concentrated and purified by flash column chromatography (eluting with 5-25% EtOAc in heptane) to give 1.75 g of the title compound MS mlz: 348.2 (M+H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 120758-03-4, its application will become more common.

Reference:
Patent; CELGENE AVILOMICS RESEARCH, INC.; SANOFI; D’AGOSTINO, Laura Akullian; SJIN, Robert Tjin Tham; NIU, Deqiang; MCDONALD, Joseph John; ZHU, Zhendong; LIU, Haibo; MAZDIYASNI, Hormoz; PETTER, Russell C.; SINGH, Juswinder; BARRAGUE, Matthieu; GROSS, Alexandre; MUNSON, Mark; HARVEY, Darren; SCHOLTE, Andrew; MANIAR, Sachin; WO2014/144737; (2014); A1;,
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Related Products of 909122-17-4, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 909122-17-4, name is 1-Bromo-2-chloro-4-ethoxy-3-fluorobenzene belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

First Step 2.6 g of well dried magnesium and 20 mL of THF were added to a reactor in a nitrogen atmosphere and heated to 40° C. 26.6 g of the compound (C12) dissolved in 80 mL of THF was added dropwise thereto slowly in a temperature range of 30 to 45° C., followed by stirring for 20 minutes. Thereafter, 21.2 g of a compound (b45) dissolved in 20 mL of THF was added dropwise thereto slowly in a temperature range of 30 to 35° C., followed by stirring for 60 minutes. The resulting reaction mixture was cooled to 25° C. and then poured into 100 mL of 3N hydrochloric acid and 100 mL of toluene, followed by mixing. The mixture was then left to rest to separate into an organic layer and an aqueous layer, followed by extracting to the organic layer. The resulting organic layer was collected and washed with water, a 2N sodium hydroxide aqueous solution, a saturated sodium hydrogen carbonate aqueous solution and water, followed by drying over anhydrous magnesium sulfate. Thereafter, the solvent was distilled off under reduced pressure to obtain 47.0 g of 4-(2-chloro-4-ethoxy-3-fluorophenyl)-trans-4′-propyl-bicyclohexyl-4-ol (b48). The resulting compound (b48) was a yellow oily substance.

The synthetic route of 1-Bromo-2-chloro-4-ethoxy-3-fluorobenzene has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Goto, Yasuyuki; Shimada, Teru; Sugiura, Teruyo; US2006/198968; (2006); A1;,
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Electric Literature of 871-90-9,Some common heterocyclic compound, 871-90-9, name is 8-Chlorooct-1-ene, molecular formula is C8H15Cl, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: In the glove box, add to the 8mL vial(R,R,R,R)-ANIPE-CuCl Compound 35 (3.4 mg, 4 mmol,2.0mol%),tBuONa (33.6 mg, 0.3 mmol, 1.5 equiv) and n-hexane (1.0 mL), and the reaction mixture was reacted at room temperature for 1 hour.B2dmpd2 (113 mg, 0.4 mmol, 2.0 equiv) was added, and the reaction mixture was further reacted at room temperature for 30 minutes.Add non-activated terminal olefin compound 36 (0.2 mmol) and MeOH (16 uL, 0.4 mmol, 2.0 equiv), the reaction mixture was reacted at room temperature for 24 hours.The mixture was filtered through Celite, diluted with ethyl acetate.The reaction solution was sparged and the silica gel was passed through a column to give a chiral alkyl boron compound 37a.The enantioselectivity of the chiral alkyl boride is determined by oxidation of H2O2/NaOH to give the chiral alcohol.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 8-Chlorooct-1-ene, its application will become more common.

Reference:
Patent; Chinese Academy Of Sciences Shanghai Organic Chemistry Institute; Shi Shiliang; Cai Yuan; Yang Xintuo; Li Feng; (67 pag.)CN109776422; (2019); A;,
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Related Products of 54730-35-7, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 54730-35-7, name is 3,5-Dichloro-4-methylaniline, This compound has unique chemical properties. The synthetic route is as follows.

Preparation 9; 5-bromo-l,3-dichloro-2-methylbenzene; Suspend 3, 5 -dichloro-4-methylaniline in 48% HBr (5 mL) and water (5 mL) and heat with a heat gun until the mixture is near the boiling point. Cool the slurry to room temperature and then cool to 00C with an ice/brine bath. Add dropwise a solution of sodium nitrite (109 mg, 1.58 mmol) in water (2 mL). After the addition is complete, stir the reaction an additional 15 min in the cold bath. Add a solution of CuBr (1.08 g, 7.53 mmol) in 48% HBr (2 mL) and heat the rapidly stirring reaction to 500C for 1 hour. Cool the reaction to room temperature, dilute with EtOAc and discard the aqueous layer. Wash the organic layer with water and brine, dry with MgSO4, filter through celite and concentrate to an orange residue. Purify the residue by silica gel chromatography eluting with hexanes to afford 164 mg (45%) of the product as a yellow solid.

The chemical industry reduces the impact on the environment during synthesis 3,5-Dichloro-4-methylaniline. I believe this compound will play a more active role in future production and life.

Reference:
Patent; ELI LILLY AND COMPANY; WALLACE, Owen, Brendan; WO2007/127726; (2007); A2;,
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Electric Literature of 90390-33-3, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 90390-33-3, name is 3-Chloro-5-fluorobenzylamine, This compound has unique chemical properties. The synthetic route is as follows.

Triethylamine (0.74 ml) and propanephosphoric anhydride (T3P; 1.02 g) are added at 0 C. to a solution of 2-oxo-1-phenylazepane-3-carboxylic acid (250 mg) and 3-chloro-5-fluorobenzylamine (205 mg) in dichloromethane (15 ml). When the reaction has been brought to completion at RT, the mixture is diluted with further dichloromethane and washed with 10% sodium bicarbonate solution and saturated NaCl solution. The organic phase is treated in the usual manner, and the residue is purified, giving the product as colourless solid in a yield of 87% (350 mg); 10430] LCMS: mass found (M+1,375.2)10431] MethodA: 0.1%ofTFAinH2O, B: 0.1%ofTFAin ACN: flow-2.0 ml/min.10432] Column: X Bridge C8 (50×4.6 mm, 3.5 tm)+ve mode10433] Rt (mm): 4.57 area % 98.66 (max), 97.22 (220 nm) 10434] HPLC:10435] MethodA: 0.1% of TFA in H20, B: 0.1% of TFA inACN, flow rate: 2.0 ml/min10436] Column: XBridge C8 (50×4.6) mm, 3.5 tm10437] Rt (mm): 4.63 area % 97.55 (max), 97.87 (220 nm);10438] ?H NMR (400 MHz, DMSO-d5): oe [ppm]8.37-8.36(m, 1H), 7.40-7.36 (m, 2H), 7.27-7.20 (m, 6H), 4.44-4.38 (m,1H), 4.25-4.20 (m, 1H), 3.92-3.83 (m, 2H), 3.60-3.59 (m,1H), 2.03-2.01 (m, 1H), 1.98-1.95 (m, 1H), 1.78-1.63 (m,4H).

The chemical industry reduces the impact on the environment during synthesis 3-Chloro-5-fluorobenzylamine. I believe this compound will play a more active role in future production and life.

Reference:
Patent; MERCK PATENT GmbH; Heinrich, Timo; Zenke, Frank; Krier, Mireille; Friese-Hamim, Manja; Seenisamy, Jeyaprakashnarayanan; US2015/31670; (2015); A1;,
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