Chlorides-buliding-blocks

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 1435-48-9 as follows. Product Details of 1435-48-9

Into a four necked RB flask of 1-lit capacity equipped with over head stirrer, a glass condenser and addition funnel, DCFB (250 g, 1.51 mol) and A1C13 (322 g, 2.41 mol) were added. The suspension was stirred at room temperature. Acetyl chloride (125 g, 1.60 mol) was added drop wise within two hours by maintaining the temperature 30-350C. After complete addition of acetyl chloride the mixture was quickly heated to 110-1200C for 5-6 hrs. The reaction kinetics was monitored by taking samples every two hrs. After the reaction was stopped the crude reaction mixture was cooled to ambient temperature. Then the reaction mixture was quenched using 1 kg ice and 500 ml water maintaining the temperature below 5O0C. The aqueous layer thus obtained was extracted with 200 ml of DCM thrice and combined all the extracts for evaporation. After the evaporation of DCM, 298.8g of brown product was obtained with the following composition.% Conversion of DCFB by GC = 76 % (24% DCFB as solvent)% DCFA = 68.64 %% Selectivity by GC = 91.5 %% Isomer = 4-5 %% DCFB = 24 %% H. B. = 4.1 %

According to the analysis of related databases, 1435-48-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ADITYA BIRLA SCIENCE & TECHNOLOGY CO. LTD.; MANDAL, Sisir; PATIL, Narendra; SULEMAN, Inamdur; MORE, Vinod; PURI, Prashant; WO2010/58421; (2010); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Some common heterocyclic compound, 17318-08-0, name is 5-Bromo-1,3-dichloro-2-fluorobenzene, molecular formula is C6H2BrCl2F, 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. category: chlorides-buliding-blocks

To an oven dried 8 mL vial with teflon cap purged with N2 was added Zinc dust (298 mg, 4.56 mmol), DMF(1.5 mL), and iodine (57.8 mg, 0.228 mmol). To this mixture was added (R)-methyl 2-((tert-butoxycarbonyl)amino)-3-iodopropanoate (500 mg, 1.519 mmol), immediately followed by iodine (57.8 mg, 0.228 mmol).Pd2(dba)3 (69.6 mg, 0.076 mmol), 2-dicyclohexylphosphino-2?,6?-dimethoxybiphenyl (62.4 mg, 0.152mmol), 5-bromo-1,3-dichloro-2-fluorobenzene (556 mg, 2.279 mmol) and the reaction mixture was allowedto stir at rt for 16 h. The crude mixture was diluted in 30 mL of EtOAc and DMF was removed using fouraqueous washes. The organic phase was dried over anhydrous sodium sulfate. The solution was filtered andconcentrated and the crude product was purified by silica gel chromatography using 100% hexanes to 30%EtOAc/Hexanes. The desired product was obtained as a pale yellow oil, (S)-methyl 2-((tertbutoxycarbonyl)amino)-3-(3,5-dichloro-4-fluorophenyl)propanoate, 0.102 g which was taken into next stepdirectly.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 17318-08-0, its application will become more common.

Reference:
Patent; Bristol-Myers Squibb Company; Miller, Michael Matthew; Mapelli, Claudio; Allen, Martin Patrick; Bowsher, Michael S.; Boy, Kenneth M.; Gillis, Eric P.; Langley, David R.; Mull, Eric; Poirier, Maude A.; Sanghvi, Nishith; Sun, Li-Qiang; Tenney, Daniel J.; Yeung, Kap-Sun; Zhu, Juliang; Reid, Patrick C.; Scola, Paul Michael; (892 pag.)US9308236; (2016); B2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 1996-30-1, name is 3-Bromo-4-fluorochlorobenzene, A new synthetic method of this compound is introduced below., HPLC of Formula: C6H3BrClF

A solution of 250 mg (0.686 mmol) (R)-tert-butyl 4-benzyl-2-((S)-2-hydroxy-3- methoxypropyl)piperazine-l -carboxylate and 0.1 ml 2-bromo-4-chloro-l-fluorobenzene (1.2 eq.) in DMSO (5 ml) under nitrogen atmosphere was stirred at room temperature for 2 h. The reaction mixture was poured onto brine and extracted twice with EtOAc. Combined extracts were washed with water three times and with saturated sodium chloride solution, dried over MgS04 and evaporated to dryness. The residue was purified by flash chromatography on silica with dichloromethane/methanol. (R)-tert- butyl 4-benzyl-2-((S)-2-(2-bromo-4-chlorophenoxy)-3-methoxypropyl)piperazine- 1 – carboxylate was obtained as oil (192 mg, 51 %).

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; ABBVIE DEUTSCHLAND GMBH & CO. KG; BACKFISCH, Gisela; BAKKER, Margaretha Henrica Maria; BLAICH, Guenter; BRAJE, Wilfried; DRESCHER, Karla; ERHARD, Thomas; HAUPT, Andreas; HOFT, Carolin; LAKICS, Viktor; MACK, Helmut; OELLIEN, Frank; PETER, Raimund; RELO, Ana Lucia; (141 pag.)WO2017/89458; (2017); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 139512-70-2, These common heterocyclic compound, 139512-70-2, name is 4-Chloro-5-fluorobenzene-1,2-diamine, 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.

Typical procedure: Mix Et3N (2.53 mg, 0.025 mmol), 2-phenylacetaldehyde 1a (30 mg, 0.25 mmol), benzene-1,2-diamine 2a (32.4 mg, 0.3 mmol), in toluene (2.5 mL) under O2 (1 atm). The reaction mixture was stirred at 60 C for 12 h. After cooling down to room temperature and concentrating in vacuum, the residue was purified by flash chromatography on a short silica gel (eluent: petroleum ether/ethyl acetate=20:1) to afford 47 mg (91%) of 3aa.

Statistics shows that 4-Chloro-5-fluorobenzene-1,2-diamine is playing an increasingly important role. we look forward to future research findings about 139512-70-2.

Reference:
Article; Zhang, Chun; Xu, Zejun; Zhang, Liangren; Jiao, Ning; Tetrahedron; vol. 68; 26; (2012); p. 5258 – 5262;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 32943-25-2, A common heterocyclic compound, 32943-25-2, name is 3-Chloro-10,11-dihydro-5H-dibenzo[b,f]azepine, molecular formula is C14H12ClN, 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 17 1-(3-(3-Chloro-10,11-dihydro-5H-dibenz[b,f]azepin-5-yl)-1-propyl)-4-piperidinecarboxylic acid hydrochloride. STR20 3-Chloro-10,11-dihydro-5H-dibenz[b,f]azepine (3.82 g, 16.6 mmol) was dissolved in toluene (20 ml). A solution of 3-chloropropionylchloride (2.53 g, 19.9 mmol) in toluene was added dropwise, and the resulting mixture was heated to 95 C. and stirred at that temperature for 30 minutes. The mixture was stirred overnight at room temperature. Further 3-chloropropionylchloride (2.53 g, 19.9 mmol) was added and the mixture was stirred at 95 C. for 1.5 h. After cooling, 0.2 M sodium hydroxide (10 ml) was added, and the phases were separated. The organic phase was diluted with more toluene (50 ml): and washed with first 0.2 M sodium hydroxide (6*10 ml) and then with more 0.2 M sodium hydroxide (3*20 ml) until the aqueous phase was alkaline. The organic phase was washed with water (3*15 ml), brine (25 ml), and dried (MgSO4). Evaporation in vacuo afforded 5.23 g (98%) of crude 3-chloro-1-(3-chloro-10,11-dihydro-5H-dibenz[b,f]azepin-5-yl)-1-propanone as an oil. This was further purified by addition of a mixture of heptane and ethyl acetate (1:1). This afforded 3.14 g (59%) of the product as a solid.

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; Novo Nordisk A/S; US6110913; (2000); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 7149-75-9, name is 4-Chloro-3-methylaniline, belongs to chlorides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 7149-75-9, Safety of 4-Chloro-3-methylaniline

Alternatively, to a solution of 4-chloro-3-methyl aniline (20.0 g, 0.141 mol) in MEOH (400 mL) was added drop-wise dimethyl acetylenedicarboxylate (21.07 g, 0.148 mol). The reaction mixture was stirred at ambient temperature for 30 minutes. The solvent was removed by evaporation and the residue was added to stirred diphenyl ether (300 mL), which has been preheated to 250°C. After 30 minutes, the mixture was cooled to ambient temperature and the resulting precipitate was collected and washed with 1 L of hot petroleum ether to give a mixture (29.0 g) of 2-methoxycarbonyl-6-chloro-7-methyl-4-oxoquinoline and 2- methoxycarbonyl-6-chloro-5-methyl-4-oxoquinoline as a gray solid.The mixture was dissolved in boiling methanol (1 L) and filtered hot. The collected solids were boiled in 1.2 L of methanol and filtered hot to afford (6. 45 g, 16percent) of 2-METHOXYCARBONYL-6-CHLORO-7-METHYL-4-OXOQUINOLINE

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 4-Chloro-3-methylaniline, and friends who are interested can also refer to it.

Reference:
Patent; SCHERING AKTIENGESELLSCHAFT; WO2004/52366; (2004); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 4535-90-4, name is 2-Chloro-N-methylethanamine hydrochloride, A new synthetic method of this compound is introduced below., COA of Formula: C3H9Cl2N

A suspension of N-Methyl-2-chloroethylammonium chloride (10 gm) in POCl3 (40 ml) was refiuxed (1350C) over night. After removing excess POCl3 under vacuum product 5i was distilled out under vacuum as light yellow oil and analyzed by 1H and 31P NMR spectroscopy to be pure.

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; THRESHOLD PHARMACEUTICALS, INC.; WO2007/2931; (2007); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 38762-41-3, 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. 38762-41-3, name is 4-Bromo-2-chloroaniline, This compound has unique chemical properties. The synthetic route is as follows.

A. Tert-butyl N-(4-bromo-2-chlorophenyl)carbamate A solution of 4-bromo-2-chloroaniline (5.00 g, 0.0242 mol) in tetrahydrofuran (50 mL) was reacted with a 1.0 M solution of sodium bis(trimethylsilyl)amide in tetrahydrofuran (53.2 mL, 0.0532 mol). The mixture was stirred 15 minutes at ambient temperature. Di-tert-butyl dicarbonate (6.34 g, 0.0290 mol) was added and the solution was stirred for 2 hours. The solvent was removed in vacuo, and the crude material was purified by flash column chromatography on silica using heptane/ethyl acetate (4:1). The solvent was removed in vacuo to give tert-butyl N-(4-bromo-2-chlorophenyl)carbamate as a white solid (4.214 g, 0.0137 mol). 1H NMR (DMSO-d6, 400 MHz) delta 8.75 (s, 1H), 7.71 (d, 1H), 7.54 (d, 1H), 7.50 (dd, 1H), 1.46 (s, 9H);

The chemical industry reduces the impact on the environment during synthesis 4-Bromo-2-chloroaniline. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Abbott Laboratories; US2002/156081; (2002); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Adding a certain compound to certain chemical reactions, such as: 622-86-6, name is (2-Chloroethoxy)benzene, belongs to chlorides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 622-86-6, name: (2-Chloroethoxy)benzene

A.27 Synthesis of [(PhOCH2CH2)2ImH]Cl (27) (2-chloroethoxy)benzene (5.02 g, 32.05 mmol) and l-(trimethylsilyl)imidazole (1.33 g, 9.48 mmol) and toluene (5 mL) were stirred at 1 10C for 7 days in complete darkness. The resultant biphasic mixture was cooled to room temperature and the top layer was discarded. The viscous bottom layer was dissolved in dichloromethane (1 mL) and pentane (50 mL) was added. The precipitated oil was washed with pentane (3×20 mL) and dried under high vacuum (3.27 g, quantitative). The product is an extremely viscous wax which solidifies completely over the course of several weeks. The following analytical data were obtained. *H NMR (CD2C12): delta 1 1.12 (s, 1H, NCHN), 7.57 (s, 2H, NCHCHN), 7.26 (t, 3JH-H= 7.7 Hz, 4H, m- CH), 6.97 (t, 4.8 Hz, 4H, 2xCH2), 4.39 (vt, 3JH-H= 4.8 Hz, 4H, 2xCH2). 13C NMR Patent; THE GOVERNING COUNCIL OF UNIVERSITY OF TORONTO; LANXESS Deutschland GmbH; MUELLER, Julia Maria; STEPHEN, Douglas; LUND, Clinton; SGRO, Michael; ONG, Christopher; CARIOU, Renan; WO2013/24119; (2013); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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. 6781-98-2, name is 2-Chloro-1,3-dimethylbenzene, A new synthetic method of this compound is introduced below., Product Details of 6781-98-2

General procedure: A test tube was charged with aryl chlorides (0.5 mmol, 1 eq), arylboronic acid (0.75 mmol, 1.5 eq), K3PO4 (1 mmol, 2 eq), H2O (0.5 mL), isopropanol (0.5 mL) and catalyst (0.0005-0.001 mmol) and the mixture was then stirred at room temperature. After the reaction was finished, the mixture was extracted three times with CH2Cl2 (3 x 2mL), dried over Na2SO4, filtered, and the solvent was removed under vacuum. Further purification of the product was achieved by flash chromatography on a silica gel column.

The synthetic route of 6781-98-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Liu, Guiyan; Liu, Chengxin; Han, Fangwai; Wang, Zhongliang; Wang, Jianhui; Tetrahedron Letters; vol. 58; 8; (2017); p. 726 – 731;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics