Triethylamine → rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(1-methyl-cyclohexylmethyl)-pyrrolidine-2-carboxylic acid tert-butyl ester

HRID 1806912Notes

Reaction equation

HRID 1806912 reaction equation
[C:1]([O:5][C:6](=[O:18])[CH2:7]/[N:8]=[CH:9]/[CH2:10][C:11]1([CH3:17])[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1)([CH3:4])([CH3:3])[CH3:2].[Cl:19][C:20]1[C:21]([F:38])=[C:22](/[CH:26]=[C:27](/[C:30]2[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][C:31]=2[F:37])\[C:28]#[N:29])[CH:23]=[CH:24][CH:25]=1.C(N(CC)CC)C.C1CCN2C(=NCCC2)CC1>ClCCl.C(O)(C)(C)C>[C:1]([O:5][C:6]([CH:7]1[CH:26]([C:22]2[CH:23]=[CH:24][CH:25]=[C:20]([Cl:19])[C:21]=2[F:38])[C:27]([C:30]2[CH:35]=[CH:34][C:33]([Cl:36])=[CH:32][C:31]=2[F:37])([C:28]#[N:29])[CH:9]([CH2:10][C:11]2([CH3:17])[CH2:12][CH2:13][CH2:14][CH2:15][CH2:16]2)[NH:8]1)=[O:18])([CH3:4])([CH3:2])[CH3:3]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 59249629(Z)-3-(3-Chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrileHCID 178428540HCID 178428540, compound

Product 1

HCID 68618756rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(1-methyl-cyclohexylmethyl)-pyrrolidine-2-carboxylic acid tert-butyl esterYield 66.5%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6386tert-ButanolSolvent

Procedure

In a manner similar to the method described in Example 100b, [2-(1-methyl-cyclohexyl)-eth-(E)-ylideneamino]-acetic acid tert-butyl ester prepared in Example 101a (2.55 g, 10 mmol) was reacted with (Z)-3-(3-chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrile (2.5 g, 8 mmol) prepared in Example 52a, AgF (1.55 g, 12.3 mmol), and triethylamine (2.8 mL, 20 mmol) in dichloromethane (150 mL) at room temperature for 18 h, followed by the reaction with DBU (10 ml) in tert-butanol (50 mL) at 100° C. for 18 h to give rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(1-methyl-cyclohexylmethyl)-pyrrolidine-2-carboxylic acid tert-butyl ester as a light yellow solid (3 g, 66%).

Sources & evidence

ORD record
ord-bc6eaf7dcb724abcbec41ba7a67f98f4
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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