Triethylamine → rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-[2-(3,6-dihydro-2H-pyran-4-yl)-2-methyl-propyl]-pyrrolidine-2-carboxylic acid tert-butyl ester

HRID 1807050Notes

Reaction equation

HRID 1807050 reaction equation
[C:1]([O:5][C:6](=[O:20])[CH2:7]/[N:8]=[CH:9]/[CH2:10][C:11]([C:14]1[CH2:15][CH2:16][O:17][CH2:18][CH:19]=1)([CH3:13])[CH3:12])([CH3:4])([CH3:3])[CH3:2].[Cl:21][C:22]1[C:23]([F:40])=[C:24](/[CH:28]=[C:29](/[C:32]2[CH:37]=[CH:36][C:35]([Cl:38])=[CH:34][C:33]=2[F:39])\[C:30]#[N:31])[CH:25]=[CH:26][CH:27]=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:28]([C:24]2[CH:25]=[CH:26][CH:27]=[C:22]([Cl:21])[C:23]=2[F:40])[C:29]([C:32]2[CH:37]=[CH:36][C:35]([Cl:38])=[CH:34][C:33]=2[F:39])([C:30]#[N:31])[CH:9]([CH2:10][C:11]([C:14]2[CH2:19][CH2:18][O:17][CH2:16][CH:15]=2)([CH3:13])[CH3:12])[NH:8]1)=[O:20])([CH3:2])([CH3:3])[CH3:4]

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 178451253HCID 178451253, compound

Product 1

HCID 67297242rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-[2-(3,6-dihydro-2H-pyran-4-yl)-2-methyl-propyl]-pyrrolidine-2-carboxylic acid tert-butyl esterYield 75%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6386tert-ButanolSolvent

Procedure

In a manner similar to the method described in Example 100b, [3-(3,6-dihydro-2H-pyran-4-yl)-3-methyl-but-(E)-ylideneamino]-acetic acid tert-butyl ester prepared in Example 129a (4.3 g, 15.5 mmol) was reacted with (Z)-3-(3-chloro-2-fluoro-phenyl)-2-(4-chloro-2-fluoro-phenyl)-acrylonitrile (3.8 g, 12.4 mmol) prepared in Example 52a, AgF (2.4 g, 19 mmol), and triethylamine (4.3 mL, 31 mmol) in dichloromethane (100 mL) at room temperature for 18 h, followed by the reaction with DBU (19 ml) in tert-butanol (18 mL) at 100° C. for 2 h to give rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-[2-(3,6-dihydro-2H-pyran-4-yl)-2-methyl-propyl]-pyrrolidine-2-carboxylic acid tert-butyl ester as a yellow gum (5.5 g, 75%).

Sources & evidence

ORD record
ord-b8be0e047b0e45e7bfcead57978bb5da
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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