4-Nitrophenyl chloroformate → HCID 22725170, compound

HRID 1387378Notes

Reaction equation

HRID 1387378 reaction equation
[CH2:1]([O:8][C:9]([C:11]1[CH:16]([C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][C:18]=2[F:24])[NH:15][C:14]([O:25][CH3:26])=[N:13][C:12]=1[CH2:27][CH3:28])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl[C:30]([O:32][C:33]1[CH:38]=[CH:37][C:36]([N+:39]([O-:41])=[O:40])=[CH:35][CH:34]=1)=[O:31]>CN(C1C=CN=CC=1)C.C(Cl)Cl>[CH2:1]([O:8][C:9]([C:11]1[CH:16]([C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][C:18]=2[F:24])[N:15]([C:30]([O:32][C:33]2[CH:34]=[CH:35][C:36]([N+:39]([O-:41])=[O:40])=[CH:37][CH:38]=2)=[O:31])[C:14]([O:25][CH3:26])=[N:13][C:12]=1[CH2:27][CH3:28])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 821294-Nitrophenyl chloroformateHCID 178436961HCID 178436961, compound

Product 1

HCID 22725170HCID 22725170, compoundYield 92%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a well stirred solution of (+)-5-(benzyloxycarbonyl) -1,6-dihydro-2-methoxy-4-ethyl-6-(2,4-difluorophenyl) pyrimidine (4.1 g, 10.62 mmol) and 4-(N,N-dimethylamino)pyridine (1.69 g, 13.80 mmol) in CH2Cl2 (200 mL) was added a powder of 4-nitrophenyl chloroformate (2.78 g, 13.80 mmol) at room temperature. The reaction mixture was stirred for 12 h and washed with 0.5 N NaOH solution (2×50 mL). The organic layer was separated and dried (Na2SO4). The solvent was evaporated and the residue was purified by column chromatography on silica gel using dichloromethane/hexane (20%-50%) as the eluent to give (+)-5-(benzyloxycarbonyl)-4-ethyl-1,6-dihydro-2-methoxy-6-(2,4-difluorophenyl)-1-[(4-nitrophenyloxy)carbonyl]pyrimidine (5.37 g, 92%) as a viscous oil.

Workup

  1. washwashed with 0.5 N NaOH solution (2×50 mL)
  2. customThe organic layer was separated
  3. dry with materialdried (Na2SO4)
  4. customThe solvent was evaporated
  5. customthe residue was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-369a0f47172d4de2b89d3852cb944166
Source dataset
uspto-grants-2001_07
Patent number
US06268369B1

Reaction notes

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