Month: June 2021

Reference of 918538-05-3, 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. 918538-05-3, name is 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: Compound 183a was prepared from tert-butyl 2,4-dichloro-5,6-dihydropyrido[3,4- d]pyrimidine-7(8H)-carboxylate (182a) (1.0 g, 3.29 mmol) in 2-Propanol (15 mL) using DIPEA (2.3 mL, 13.15 mmol) and 1-(3,4,5-trimethoxyphenyl)-1H-imidazol-4-amine (57a) (0.98 g, 3.95 mmol). This gave after workup and purification by flash column chromatography [silica gel, (12 g) eluting with DMA-80 in DCM (0 to 80%)] fert-butyl 2-chloro-4-((l-(3,4,5- trimethoxyphenyl)-lH-imidazol-4-yl)amino)-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)- carboxylate (183a) (0.87 g, 51 % yield) as a buff solid; NMR (300 MHz, DMSO-^e) delta 9.65 (s, 1H, D20 exchangeable), 8.16 (d, J = 1.5 Hz, 1H), 7.78 (d, J = 1.6 Hz, 1H), 6.90 (s, 2H), 4.35 (s, 2H), 3.87 (s, 6H), 3.69 (s, 3H), 3.61 (t, J = 5.8 Hz, 2H), 2.69 – 2.60 (m, 2H), 1.43 (s, 9H).

The synthetic route of 2,4-Dichloropyrrolo[2,1-f][1,2,4]triazine has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BIOCRYST PHARMACEUTICALS, INC.; KOTIAN, Pravin, L.; BABU, Yarlagadda, S.; KUMAR, V., Satish; ZHANG, Weihe; LU, Peng-Cheng; RAMAN, Krishnan; (747 pag.)WO2018/232094; (2018); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

These common heterocyclic compound, 468075-00-5, name is 2-Bromo-1-chloro-4-(trifluoromethoxy)benzene, 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. SDS of cas: 468075-00-5

Into a two-dram vial was added-2-bromo-1-chloro-4-(trifluoromethoxy)benzene (100 mg, 0.363 mmol), the title compounds from Example 3 Step B (100 mg), and SPhos biaryi precatalysis (26.2 mg, 0.036 mmol), cesium carbonate (237 mg. 0.726 mmol) followed by 1,4-dioxane (2 ml). The mixture was degassed by N2 for 5 mm, then heated at 100C for 24 h. Concentrate to remove solvents. The afforded crude was purified with normal phase silica gel chromatography (0 to 100% EtOAc in 1:1 mixed hexanes/DCM) to give desired product (as a mixture of 2).

The synthetic route of 2-Bromo-1-chloro-4-(trifluoromethoxy)benzene has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MERCK SHARP & DOHME CORP.; CHELLIAH, Mariappan; CHU, Hong Dong; COX, Jason, M.; DEBENHAM, John, S; EAGEN, Keith; LAN, Ping; LONDON, Clare; PLOTKIN, Michael, A.; SHAH, Unmesh; SINZ, Christopher Joseph; SUN, Zhongxiang; VACCARO, Henry, M.; VENKATRAMAN, Skikanth; WO2014/59232; (2014); A2;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 95-81-8, 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. 95-81-8, name is 2-Chloro-5-methylaniline belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Reference Example 6 4-(4-Hydroxyanilino)-6-(2-chloro-5-methylanilino)pyrimidine The title compound was prepared in a similar manner to that of Reference Example 4 from 4-(4-hydroxyanilino)-6-chloropyrimidine (Reference Example 5) by reaction with 2-chloro-5-methylaniline in butan-1-ol in the presence of catalytic concentrated hydrochloric acid. The mixture was heated at reflux for 18 hours, concentrated and the residue purified by column chromatography eluding with DCMN:MeOH: concentrated ammonia (94:5:1). Yield 84%. NMR: 2.26 (3H, s), 5.85 (1H, s), 6.68 (2H, d), 6.93 (1H, d), 7.19 (2H, d), 7.32 (1H, d), 7.46 (1H, s), 8.09 (1H, s), 8.44 (1H, s), 8.69 (1H, s), 9.11 (1H, s); m/z 327 (MH+).

The synthetic route of 2-Chloro-5-methylaniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; AstraZeneca AB; US6632820; (2003); B1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 698-01-1, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 698-01-1 name is 2-Chloro-N,N-dimethylaniline, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

General procedure: A mixture of benzoyl chloride 1a (0.5 mmol), N,N-dimethylaniline 2a (1.5 mmol), KMnO4 (1.5 equiv.) and CH3CN (2.0 mL) was placed in a 25 mL reaction straight tube under air atmosphere. The tube was then placed in an oil bath, stirred and heated at 60 C for 6 h. After cooling to room temperature, the system was flushed to Sand core funnel using dichloroethane (rinsing three times, VDCM < 50 mL), Vacuum filtration, and the volatile solvent was removed in vacuo. The crude product was purified through a silica gel column (ethyl acetate/petroleum ether = 1:5) to afford (93%) a yellow liquid. At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Chloro-N,N-dimethylaniline, and friends who are interested can also refer to it. Reference:
Article; Zhang, Zhang; Liu, Yong-Hong; Zhang, Xi; Wang, Xi-Cun; Tetrahedron; vol. 75; 19; (2019); p. 2763 – 2770;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 38762-41-3, The chemical industry reduces the impact on the environment during synthesis 38762-41-3, name is 4-Bromo-2-chloroaniline, I believe this compound will play a more active role in future production and life.

Description 13; (4-Bromo-2-chlorophenyl)-(tetrahydropyran-4-yl)-amine (D13); A mixture of 4-bromo-2-chloro-phenylamine (0.5 g, 2.422 mmol), tetrahydropyran-4- one (1.308 ml, 10.898 mmol), and sodium triacetoxyborohydride (2.31 g, 10.898 mmol) in DCE (20 ml) was stirred at room temperature for 16 h. The reaction mixture was washed with NaHCO3 (aqueous sat. solution), dried (Na2SO4) and the solvent was evaporated in vacuo. The residue was purified by column chromatography (silica gel; heptane/DCM up to 40% as eluent). The desired fractions were collected and evaporated in vacuo to yield compound D13 (0.383 g, 52%) as white solid. LCMS: MW (theor): 289; [MH+]: 290; RT (min): 4.39 (Method 1).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 4-Bromo-2-chloroaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ORTHO-MCNEIL-JANSSEN PHARMACEUTICALS, INC.; ADDEX PHARMA S.A.; CID-NUNEZ, Jose, Maria; TRABANCO-SUAREZ, Andres, Avelino; MACDONALD, Gregor, James; WO2010/60589; (2010); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 328-72-3, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 328-72-3 name is 3,5-Bis(trifluoromethyl)chlorobenzene, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

STR7 Preparation of 3,5-bis-(trifluoromethyl)-benzonitrile By the method of Example 3, 124 g of 1-chloro-3,5-bis-(trifluoromethyl)-benzene in 120 ml of ethyl methyl ketone gave 61.4 g (51.2% of theory) of 3,5-bis-(trifluoromethyl)-benzonitrile (b.p.45 mbar: 88 C.). After 20 hours, the conversion was approximately 60%. 4.5% of coupling products had formed.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3,5-Bis(trifluoromethyl)chlorobenzene, and friends who are interested can also refer to it.

Reference:
Patent; Bayer Aktiengesellschaft; US6162942; (2000); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 3386-33-2,Some common heterocyclic compound, 3386-33-2, name is 1-Chlorooctadecane, molecular formula is C18H37Cl, 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.

After dropping 173.4 g (0.6 mol) of 1-chlorooctadecane thereinto within about 15 minutes, the mixture was allowed to stand overnight under stirring at room temperature. Then the reaction mixture was washed with 500 ml of isopropyl ether and thus crystals of acryloyloxyethyl-N,N-dimethyloctadecylammonium chloride were obtained.

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

Reference:
Patent; Hisamitsu Pharmaceutical Co, Inc.; US5665348; (1997); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Some common heterocyclic compound, 1005-56-7, name is O-Phenyl carbonochloridothioate, molecular formula is C7H5ClOS, 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. name: O-Phenyl carbonochloridothioate

6a (100 mg, 0.30 mmol) was dissolved in 5 mL of acetonitrile,4-Dimethylaminopyridine (162 mg,1.33 mmol) andPhenylchloroformate (0.1 mL)After stirring at 0-60 C for 2-12 hours, the reaction solution was filtered, concentrated and separated by column(N-hexane / ethyl acetate: 20/1) gave a colorless oil 8 (128 mg, 0.27 mmol, 90%).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1005-56-7, its application will become more common.

Reference:
Patent; China Pharmaceutical University; Xie Weijia; Zhang Chenxi; Wang Zihao; Wu Xiaoming; Xu Jinyi; Yao Hequan; Lin Aijun; (12 pag.)CN107043403; (2017); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Electric Literature of 928783-85-1, These common heterocyclic compound, 928783-85-1, name is 1-Bromo-3-chloro-5-(trifluoromethyl)benzene, 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.

In a 25 mL sealed tube, sodium 2-methylpropan-2-olate (62.7 mg, 653 muetaiotaomicron, Eq: 1.20), bis(dibenzylideneacetone)palladium (31.3 mg, 54.4 muetaiotaomicron, Eq: 0.1) and 2-di-tert-butyl(2′,4′,6′- triisopropylbiphenyl-2-yl)phosphine (23.1 mg, 54.4 muetaiotaomicron, Eq: 0.1) were combined with toluene (5.00 mL) to give a dark brown suspension. N5,N5,l-tris(4-methoxybenzyl)-lH-l,2,4-triazole- 3,5-diamine (250 mg, 544 muetaiotaomicron, Eq: 1.00) and l-bromo-3-chloro-5-(trifluoromethyl)benzene (141 mg, 544 muetaiotaomicron, Eq: 1.00) were added. The reaction mixture was degassed with argon for 15 min, and then heated to 110C for 3 hours. The reaction mixture was cooled and diluted with EtOAc (50 mL), washed with H20 (25 mL) and brine (25 mL). The organic layer was dried over anhydrous MgS04, filtered and volatiles were removed under reduced pressure to yield an oil from which the compound was isolated by column chromatography (Hexanes/EtOAc = 70/30) to give an off-white solid 40 mg (12%). MH+ 638.4

Statistics shows that 1-Bromo-3-chloro-5-(trifluoromethyl)benzene is playing an increasingly important role. we look forward to future research findings about 928783-85-1.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BILOTTA, Joseph Anthony; CHEN, Zhi; CHIN, Elbert; DING, Qingjie; ERICKSON, Shawn David; GABRIEL, Stephen Deems; KLUMPP, Klaus; MA, Han; MERTZ, Eric; PLANCHER, Jean-Marc; WEIKERT, Robert James; WO2014/6066; (2014); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of 33786-89-9,Some common heterocyclic compound, 33786-89-9, name is 5-Chloro-m-phenylenediamine, molecular formula is C6H7ClN2, 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.

[3]: 1.1-(4-Methoxyphenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (500 mg, 1.75 mmol, 1 equiv) was dissolved in .5 mL dry DMF under inert atmosphere with HATU (732 mg, 1.93 mmol, 1.1 equiv). While stirring, DIPEA (1.8 g, 14 mmol, 8 equiv) was added drop wise at 0 C. When all the DIPEA was added, it was allowed to sit for 15 minutes. After this, 5-chloro-m-phenylenediamine (996 mg, 7.0 mmol, 4 equiv) was added. The reaction was allowed to warm up to R.T. over the course of 2 hrs and was monitored by TLC and LC/MS. When complete, 5 mL of H2O and 5 mL of EtOAc were added and the mixture transferred to a seperatory funnel. The aqueous layer was extracted into EtOAc (5 mL X 3). The crude product was dissolved in 1 : 1 ACN : H2O, separated by RP-HPLC (H2O [.1% TFA] : ACN [.1% TFA]), and lyophilized to afford the coupled intermediate as a clear oil (410.78 g/mol, 245 mg, 34% yield).2. A portion of the purified product from step one (100 mg, .22 mmol, 1 equiv) was dissolved in .5 mL dry DMF under inert atmosphere. Dry TEA (90 mg, .85 mmole, 4 equiv) was added via syringe at 0 C.20 mL of acryloyl chloride was transferred via syringe to the reaction vial (22 mg, .242 mmol, 1.1 equiv) at 0 C. The reaction was allowed to warm up to R. T. and was monitored by TLC and LC/MS. Once complete, 1 mL of saturated NaHCO3 solution was added and allowed to mix for 15 minutes to quench the reaction. To this, 5 mL of EtOAc was added and the mixture was transferred to a seperatory funnel. The aqueous layer was extracted into EtOAc (5 mL X 3). The crude product was dissolved in 1 : 1 ACN : H2O, separated by RP-HPLC (H2O [.1% TFA] : ACN [.1% TFA]), and lyophilized to afford compound 3 as a clear oil (464.78 g/mol, 48 mg, 47% yield).1H (500 MHz, (CD3)2SO) d: 10.71 (s, 1H), 10.41 (s, 1H), 8.05 (m, 1H), 7.69 (m, 1H), 7.49 (m, 1H), 8.29 (s, 1H), 7.46 (m, 2H), 7.12 (m, 2H), 6.44(dd, J1 = 17.00Hz, J2= 10.08 Hz, 1H), 6.30(dd, J1 = 17.00 Hz, J2= 1.76Hz, 1H), 5.80(dd, J1 = 10.08 Hz, J2= 1.76Hz, 1H), 3.85(s, 3H).13C (125 MHz, (CD3)2SO) d: 163.47, 160.15, 159.32, 140.64, 140.25, 139.55, 133.08, 131.51, 131.46, 127.64, 127.47 (2C), 120.74, 120.38, 118.22, 114.40 (2C), 114.28, 114.26, 108.83, 55.60.; [4]: 1. Please refer to step one of the synthesis of compound 3 above.2. A portion of the purified coupled intermediate from step one compound 3?s synthesis (100 mg, .22 mmol, 1 equiv) was dissolved in .5 mL dry DMF under inert atmosphere. Dry TEA (90 mg, .85 mmole, 4 equiv) was added via syringe at 00C.20 mL of propionyl chloride was transferred via syringe to the reaction vial (22 mg, .242 mmol, 1.1 equiv) at 00C. The reaction was allowed to warm up to R. T. and was monitored by TLC and LC/MS. Once complete, 1 mL of saturated NaHCO3 solution was added and allowed to mix for 15 minutes to quench the reaction. To this, 5 mL of EtOAc was added and the mixture was transferred to a seperatory funnel. The aqueous layer was extracted into EtOAc (5 mL X 3). The crude product was dissolved in 1 : 1 ACN : H2O, separated by RP-HPLC (H2O [.1% TFA] : ACN [.1% TFA]), and lyophilized to afford compound 4 as a clear oil (466.8 g/mol, 74 mg, 72% yield).1H (500 MHz, (CD3)2SO) d: 10.66 (s, 1H), 10.12 (s, 1H), 8.28, (s, 1H), 7.97 (m, 1H), 7.58 (m, 1H), 7.46 (m, 3H), 7.12 (m, 2H), 3.85 (s, 3H), 2.33 (q, J = 7.6 Hz, 2H), 1.08 (t, J = 7.6 Hz, 3H).13C (125 MHz, (CD3)2SO) d: 172.47, 160.13, 159.29, 140.96, 140.16, 139.54, 132.96, 131.47, 127.47 (2C), 120.78, 120.39, 118.22, 114.40 (2C), 113.97, 113.73, 108.52, 55.60, 29.56, 9.53.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Chloro-m-phenylenediamine, its application will become more common.

Reference:
Patent; THE REGENTS OF THE UNIVERSITY OF CALIFORNIA; SHOKAT, Kevan, M.; GENTILE, Daniel; MOSS, Steven; (380 pag.)WO2018/112420; (2018); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics