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

HRID 525193
Notes
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Reaction equation

HRID 525193 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
ParticipantsProcedureWorkupSources & evidenceReaction notes

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 6344DichloromethaneSolvent
HCID 8058
Hexane
Solvent

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-e9a88217289240b2b68acb7de9154d2d
Source dataset
uspto-grants-2016_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09340529B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes