Diphenylphosphinic chloride → HCID 53357737, compound

HRID 1807288Notes

Reaction equation

HRID 1807288 reaction equation
[Cl:1][C:2]1[C:3]([F:31])=[C:4]([C@@H: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])[C@H:11]([CH2:23][C:24]([CH3:27])([CH3:26])[CH3:25])[NH:10][C@H:9]2[C:28](O)=[O:29])[CH:5]=[CH:6][CH:7]=1.CCN(C(C)C)C(C)C.C1(P(Cl)(C2C=CC=CC=2)=O)C=CC=CC=1.[CH3:56][O:57][C:58]([C:60]1[O:61][C:62]2[CH:68]=[CH:67][C:66]([NH2:69])=[CH:65][C:63]=2[CH:64]=1)=[O:59]>ClCCl>[Cl:1][C:2]1[C:3]([F:31])=[C:4]([C@@H: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])[C@H:11]([CH2:23][C:24]([CH3:26])([CH3:25])[CH3:27])[NH:10][C@H:9]2[C:28]([NH:69][C:66]2[CH:67]=[CH:68][C:62]3[O:61][C:60]([C:58]([O:57][CH3:56])=[O:59])=[CH:64][C:63]=3[CH:65]=2)=[O:29])[CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 73910Diphenylphosphinic chlorideHCID 81531DiisopropylethylamineHCID 10845388Methyl 5-aminobenzofuran-2-carboxylateHCID 59249226(2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acid

Product 1

HCID 53357737HCID 53357737, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of chiral-(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid (60.9 mg, 0.130 mmol) in dichloromethane (3 ml) was reacted with DIPEA (66.8 mg, 0.517 mmol) and DIPHENYLPHOSPHINIC CHLORIDE (75.8 mg, 0.320 mmol) and stirred for 20 min under argon. 5-AMINO-BENZOFURAN-2-CARBOXYLIC ACID METHYL ESTER (26.0 mg, 0.136 mmol, Biofine,) was added and stirred 2.5 hrs. The reaction mixture was diluted with dichloromethane and washed with water, sat. NaHCO3 and brine. After drying over Na2SO4 the crude material was purified by silica gel chromatography with ethyl acetate and n-hexanes giving chiral-methyl 5-((2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxamido)benzofuran-2-carboxylate (46.2 mg., 55.4%) as a white solid. MS (ES+) m/z Calcd: [(M+H)+]: 640.15. found: 640.0.

Workup

  1. stirringstirred 2.5 hrs
  2. washwashed with water, sat. NaHCO3 and brine
  3. dry with materialAfter drying over Na2SO4 the crude material
  4. customwas purified by silica gel chromatography with ethyl acetate and n-hexanes giving chiral-methyl 5-((2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxamido)benzofuran-2-carboxylate (46.2 mg., 55.4%) as a white solid

Sources & evidence

ORD record
ord-9b87d7c70c8742cd8602f1237fc6e387
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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