4-Bromo-2-chloro-1-isocyanatobenzene → N-(4-bromo-2-chlorophenyl)-2-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]acetyl}hydrazinecarboxamide

HRID 2405376Notes

Reaction equation

HRID 2405376 reaction equation
[CH:1]1([C:4]([N:6]2[CH2:10][CH2:9][C@@H:8]([CH2:11][C:12]([NH:14][NH2:15])=[O:13])[CH2:7]2)=[O:5])[CH2:3][CH2:2]1.[Br:16][C:17]1[CH:22]=[CH:21][C:20]([N:23]=[C:24]=[O:25])=[C:19]([Cl:26])[CH:18]=1>ClCCl.CCCCCC>[Br:16][C:17]1[CH:22]=[CH:21][C:20]([NH:23][C:24]([NH:15][NH:14][C:12](=[O:13])[CH2:11][C@@H:8]2[CH2:9][CH2:10][N:6]([C:4]([CH:1]3[CH2:3][CH2:2]3)=[O:5])[CH2:7]2)=[O:25])=[C:19]([Cl:26])[CH:18]=1

Participants

5

Reactant 2

HCID 27333634-Bromo-2-chloro-1-isocyanatobenzeneHCID 673540782-[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]acetohydrazide

Product 1

HCID 71087424N-(4-bromo-2-chlorophenyl)-2-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]acetyl}hydrazinecarboxamideYield 88.5%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8058HexaneSolvent

Procedure

To a solution of 2-[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]acetohydrazide (700 mg, 3.31 mmol) in dry dichloromethane (15 mL) was added 4-bromo-2-chloro-1-isocyanatobenzene (770 mg, 3.31 mmol). The reaction was stirred overnight, diluted with hexane (15 mL), and the precipitate collected and washed with hexane to provide the title compound (1.3 g, 2.93 mmol, 88% yield) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 9.85 (br. s, 1H), 8.82 (br. s, 1H), 8.50-8.23 (m, 1H), 8.05 (dd, J=5.3, 8.8 Hz, 1H), 7.72 (d, J=1.8 Hz, 1H), 7.49 (d, J=8.8 Hz, 1H), 3.81 (dd, J=7.6, 9.9 Hz, 0.5H), 3.77-3.39 (m, 2H), 3.31-3.13 (m, 1H), 2.94 (d, J=19.5 Hz, 0.5H), 2.64-2.54 (m, 0.5H), 2.47-2.39 (m, 0.5H), 2.28 (dd, J=7.3, 16.7 Hz, 2H), 2.17-1.88 (m, 1H), 1.80-1.47 (m, 2H), 0.81-0.61 (m, 4H).

Workup

  1. customthe precipitate collected
  2. washwashed with hexane

Sources & evidence

ORD record
ord-93e0d44a59914bc2b7d6b24d781d006f
Source dataset
uspto-grants-2014_08
Patent number
US08802864B2

Reaction notes

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