Diisopropylethylamine → rac tert-butyl 4-((2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxamido)benzylcarbamate

HRID 1807295Notes

Reaction equation

HRID 1807295 reaction equation
[Cl:1][C:2]1[C:3]([F:31])=[C:4]([CH:8]2[C:12]([C:15]3[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][C:16]=3[F:22])([C:13]#[N:14])[CH:11]([CH2:23][C:24]([CH3:27])([CH3:26])[CH3:25])[NH:10][CH:9]2[C:28]([OH:30])=O)[CH:5]=[CH:6][CH:7]=1.C(N(CC)C(C)C)(C)C.[NH2:41][C:42]1[CH:56]=[CH:55][C:45]([CH2:46][NH:47][C:48](=[O:54])[O:49][C:50]([CH3:53])([CH3:52])[CH3:51])=[CH:44][CH:43]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.ClC1C(F)=C([C@@H]2[C@](C3C=CC(Cl)=CC=3F)(C#N)[C@H](CC(C)(C)C)N[C@H]2C(O)=O)C=CC=1>ClCCl>[C:50]([O:49][C:48](=[O:54])[NH:47][CH2:46][C:45]1[CH:44]=[CH:43][C:42]([NH:41][C:28]([C@H:9]2[C@H:8]([C:4]3[CH:5]=[CH:6][CH:7]=[C:2]([Cl:1])[C:3]=3[F:31])[C@:12]([C:15]3[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][C:16]=3[F:22])([C:13]#[N:14])[C@H:11]([CH2:23][C:24]([CH3:26])([CH3:27])[CH3:25])[NH:10]2)=[O:30])=[CH:56][CH:55]=1)([CH3:53])([CH3:51])[CH3:52]

Participants

7

Reactant 5

HCID 81531Diisopropylethylamine3×HCID 2756041tert-butyl N-[(4-aminophenyl)methyl]carbamateHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)2×HCID 59249226(2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acidHCID 666882513-(3-Chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid2×

Product 1

HCID 53358000rac tert-butyl 4-((2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxamido)benzylcarbamateYield 288.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acid (20.0 mg) in dichloromethane (5 ml) were added N,N-DIISOPROPYLETHYLAMINE (33 mg) and tert-butyl 4-aminobenzylcarbamate (57.0 mg, 0.256 mmol, Array) followed by N,N,N′,N′-tetramethyl-O-(7-aza-benzotriazol-1-yl)uranium hexafluorophosphate (HATU) (29 mg, Chem-Impex) and the reaction mixture was stirred for 30 min; Another portion of N,N-DIISOPROPYLETHYLAMINE (33 mg), rac-(2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acid (20.0 mg) and HATU (29 mg) was added and stirring was continued for 30 min before the addition of the last portion of N,N-DIISOPROPYLETHYLAMINE (33 mg), (2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acid (20.0 mg) and HATU (29 mg). 1 hr later, the reaction mixture was diluted with CH2Cl2 (80 mL), washed with sat Na2CO3 (2×15 mL), water (2×15 mL) and evaporated. The crude material was purified by flash chromatography (silica gel, 4 g, 4% to 50% EtOAc in hexanes) to give rac-(4-{[(2R,3S,4R,5S)-4-(4-Chloro-2-fluoro-phenyl)-3-(3-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-benzyl)-carbamic acid tert-butyl ester as off-white solid (82.8 mg, 96%). HRMS (ES+) m/z Calcd for C35H39Cl2F2N4O3 [(M+H)+]: 671.2362. found: 671.2360.

Workup

  1. stirringstirring
  2. washwashed
  3. customevaporated
  4. customThe crude material was purified by flash chromatography (silica gel, 4 g, 4% to 50% EtOAc in hexanes)

Sources & evidence

ORD record
ord-c78cca0d127840519373a9454e0fd15b
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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