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

HRID 1806853Notes

Reaction equation

HRID 1806853 reaction equation
[C:1]([O:5][C:6](=[O:17])[CH2:7]/[N:8]=[CH:9]/[CH2:10][C:11]([CH3:16])([CH3:15])[CH:12]([CH3:14])[CH3:13])([CH3:4])([CH3:3])[CH3:2].[Cl:18][C:19]1[C:20]([F:37])=[C:21](/[CH:25]=[C:26](/[C:29]2[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][C:30]=2[F:36])\[C:27]#[N:28])[CH:22]=[CH:23][CH:24]=1.C(N(CC)CC)C>ClCCl>[C:1]([O:5][C:6]([CH:7]1[CH:25]([C:21]2[CH:22]=[CH:23][CH:24]=[C:19]([Cl:18])[C:20]=2[F:37])[C:26]([C:29]2[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][C:30]=2[F:36])([C:27]#[N:28])[CH:9]([CH2:10][C:11]([CH3:15])([CH3:16])[CH:12]([CH3:13])[CH3:14])[NH:8]1)=[O:17])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 59249629(Z)-3-(3-Chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrileHCID 178443624HCID 178443624, compound

Product 1

HCID 67296690rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2,3-trimethyl-butyl)-pyrrolidine-2-carboxylic acid tert-butyl esterYield 57%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

In a manner similar to the method described in Example 1c, [3,3,4-trimethyl-pent-(E)-ylideneamino]-acetic acid tert-butyl ester prepared in Example 78a (1.5 g, 6.2 mmol) was reacted with (Z)-3-(3-chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrile (1.1 g, 3.5 mmol) prepared in Example 52a, AgF (1.2 g, 9.5 mmol), and triethylamine (2 g, 20 mmol) in dichloromethane (150 mL) at room temperature 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-(2,2,3-trimethyl-butyl)-pyrrolidine-2-carboxylic acid tert-butyl ester as a white foam (1.1 g, 56%).

Sources & evidence

ORD record
ord-7d1734f2deec4ba287e52d4e78af1213
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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