tert-Butyl isocyanate → 4-[2-[4-(3-Bromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-1-piperazinyl]-2-oxoethyl]-N-(1,1-dimethylethyl)-1-piperidinecarboxamide

HRID 277972Notes

Reaction equation

HRID 277972 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[CH2:12][CH2:11][C:10]3[CH:13]=[C:14]([Cl:17])[CH:15]=[CH:16][C:9]=3[CH:8]([N:18]3[CH2:23][CH2:22][N:21]([C:24](=[O:32])[CH2:25][CH:26]4[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]4)[CH2:20][CH2:19]3)[C:5]2=[N:6][CH:7]=1.[C:33]([N:37]=[C:38]=[O:39])([CH3:36])([CH3:35])[CH3:34]>ClCCl>[Br:1][C:2]1[CH:3]=[C:4]2[CH2:12][CH2:11][C:10]3[CH:13]=[C:14]([Cl:17])[CH:15]=[CH:16][C:9]=3[CH:8]([N:18]3[CH2:19][CH2:20][N:21]([C:24](=[O:32])[CH2:25][CH:26]4[CH2:31][CH2:30][N:29]([C:38]([NH:37][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:39])[CH2:28][CH2:27]4)[CH2:22][CH2:23]3)[C:5]2=[N:6][CH:7]=1

Participants

4

Reactant 2

HCID 62412tert-Butyl isocyanate2×HCID 107682201-(3-Bromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-4-[(4-piperidinyl)acetyl]piperazine

Product 1

HCID 227446574-[2-[4-(3-Bromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-1-piperazinyl]-2-oxoethyl]-N-(1,1-dimethylethyl)-1-piperidinecarboxamideYield 85.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

1-(3-Bromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-4-[(4-piperidinyl)acetyl]piperazine (Preparative Example 10) (500 mg, 0.8 mmoles) was dissolved in anhydrous dichloromethane (5 ml) and tert-butyl isocyanate (383.8 mg, 3.2 mmoles) was added. The mixture was stirred under argon at 25° C. for 47 h. Additional tert-butyl isocyanate (191.4 mg, 1.6 mmoles) was added and the reaction was stirred for a total of 144 h. The solution was heated at 74° C. for 5 h and the stirred at 25° C. for an additional 24 h. The solution was chromatographed on silica gel using 2% (10% conc. NH4OH in methanol) dichloromethane as the eluant to give 421.8 mg of the title compound (Yield: 71%).

Workup

  1. stirringthe reaction was stirred for a total of 144 h
  2. temperatureThe solution was heated at 74° C. for 5 h
  3. stirringthe stirred at 25° C. for an additional 24 h
  4. customThe solution was chromatographed on silica gel using 2% (10% conc. NH4OH in methanol) dichloromethane as the eluant

Sources & evidence

ORD record
ord-ad1a806aae704f1bbfead11385b27797
Source dataset
uspto-grants-2002_03
Patent number
US06358968B1

Reaction notes

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