Diisopropylethylamine → [(3S,4R)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-methyl-carbamic acid 4-fluoro-phenyl ester

HRID 587400Notes

Reaction equation

[CH2:1]([N:8]1[CH2:12][C@@H:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)[C@H:10]([NH:21][CH3:22])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CCN(C(C)C)C(C)C.Cl[C:33]([O:35][C:36]1[CH:41]=[CH:40][C:39]([F:42])=[CH:38][CH:37]=1)=[O:34]>C(Cl)Cl>[F:42][C:39]1[CH:40]=[CH:41][C:36]([O:35][C:33](=[O:34])[N:21]([C@H:10]2[C@H:11]([C:13]3[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=3)[CH2:12][N:8]([CH2:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[CH2:9]2)[CH3:22])=[CH:37][CH:38]=1

Participants

Conditions

Temperature: 0 °C

Procedure

A mixture of 3.35 g (10 mmol) (3S,4R)-1-benzyl-4-(3,4-dichlorophenyl)-N-methylpyrrolidin-3-amine (example 159, h), 1.61 g (12.5 mmol) DIPEA and 1.92 g (11 mmol) 4-fluorophenyl chloroformate in 50 mL DCM at 0-5° C. was stirred at 0° C. for 1 h and evaporated to dryness. The residue was subjected to column chromatography on silica eluting with a gradient formed from heptane and t-butyl-methylether to yield after evaporation of the product containing fractions 3.07 g (65%) of the title compound as colourless viscous oil. MS m/e: 473.1 [M+H]+.

Workup

customevaporated to dryness
customformed from heptane and t-butyl-methylether
customto yield
customafter evaporation of the product
additioncontaining fractions 3.07 g (65%) of the title compound as colourless viscous oil

Sources & evidence

ORD record: ord-8c4b1c7f64c143ddb247bce9d7a3b9a7
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09226916B2

Reaction notes

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