Triethylamine → HCID 59548963, compound

HRID 221452Notes

Reaction equation

HRID 221452 reaction equation
[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:29][C:30]1[CH:35]=[C:34]([F:36])[C:33]([F:37])=[CH:32][C:31]=1[F:38])[CH2:10][C:11]([N:13]1[CH2:18][CH2:17][N:16]2[C:19]([C:25]([F:28])([F:27])[F:26])=[N:20][C:21]([C:22]([OH:24])=O)=[C:15]2[CH2:14]1)=[O:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].[N:39]1([C:45]([O:47][C:48]([CH3:51])([CH3:50])[CH3:49])=[O:46])[CH2:44][CH2:43][NH:42][CH2:41][CH2:40]1.O=C1N([ClH]P([ClH]N2CCOC2=O)=O)CCO1.C(N(CC)CC)C>ClCCl>[C:48]([O:47][C:45]([N:39]1[CH2:44][CH2:43][N:42]([C:22]([C:21]2[N:20]=[C:19]([C:25]([F:27])([F:28])[F:26])[N:16]3[CH2:17][CH2:18][N:13]([C:11](=[O:12])[CH2:10][C@H:9]([NH:8][C:6]([O:5][C:1]([CH3:3])([CH3:2])[CH3:4])=[O:7])[CH2:29][C:30]4[CH:35]=[C:34]([F:36])[C:33]([F:37])=[CH:32][C:31]=4[F:38])[CH2:14][C:15]=23)=[O:24])[CH2:41][CH2:40]1)=[O:46])([CH3:51])([CH3:49])[CH3:50]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 59548952(R)-7-[3-tert-butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid

Product 1

HCID 59548963HCID 59548963, compoundYield 103.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

(R)-7-[3-tert-Butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carboxylic acid 2a (150 mg, 0.27 mmol), tert-butyl piperazine-1-carboxylate (100.6 mg, 0.54 mmol), bis(2-oxo-3-oxazolidinyl)phosphonic chloride (0.138 g, 0.54 mmol) and triethylamine (0.25 mL, 1.62 mmol) were dissolved in 6 mL of dichloromethane under stirring. The reaction mixture was reacted at room temperature overnight and monitored by thin layer chromatography until the disappearance of the starting materials. The reaction mixture was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound (R)-4-{7-[3-tert-butoxycarbonylamino-4-(2,4,5-trifluoro-phenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-carbonyl}-piperazine-1-carboxylic acid tert-butyl ester 13a (200 mg, yield 99%) as a white solid.

Workup

  1. customThe reaction mixture was reacted at room temperature overnight
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customThe resulting residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-0c5ec764f45b4e98abcfabfcdd223cf8
Source dataset
uspto-grants-2012_06
Patent number
US08207161B2

Reaction notes

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