Acetic Acid → HCID 136374699, compound

HRID 907944Notes

Reaction equation

HRID 907944 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C:13]3=[N:14][NH:15][C:16](=[O:21])[C:17]4[CH:18]=[CH:19][CH:20]=[C:11]([C:12]=43)[NH:10][CH:9]2[C:22]2[CH:29]=[CH:28][C:25]([CH:26]=O)=[CH:24][CH:23]=2)=[CH:4][CH:3]=1.[N:30]1([C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37])[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]1.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl>[F:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[C:13]3=[N:14][NH:15][C:16](=[O:21])[C:17]4[CH:18]=[CH:19][CH:20]=[C:11]([C:12]=43)[NH:10][CH:9]2[C:22]2[CH:23]=[CH:24][C:25]([CH2:26][N:33]3[CH2:34][CH2:35][N:30]([C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37])[CH2:31][CH2:32]3)=[CH:28][CH:29]=2)=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 143452tert-Butyl piperazine-1-carboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 136344749HCID 136344749, compound

Product 1

HCID 136374699HCID 136374699, compoundYield 32.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 4-(9-(4-fluorophenyl)-3-oxo-3,7,8,9-tetrahydro-2H-pyrido[4,3,2-de]phthalazin-8-yl)benzaldehyde (150 mg, 0.39 mmol), tert-butyl piperazine-1-carboxylate (218 mg, 1.17 mmol), and acetic acid (117 mg, 1.95 mmol) in dichloromethane (20 mL) was stirred at room temperature overnight. Then the mixture was cooled to 0° C. and sodium triacetoxyborohydride (124 mg, 0.58 mmol) was added. After the addition, the mixture was stirred at room temperature for 5 h. Dichloromethane was removed under reduced pressure. The crude product was purified by flash chromatography to give the title compound (70 mg, yield 32%). LC-MS (ESI) m/z: 556 (M+1)+.

Workup

  1. temperatureThen the mixture was cooled to 0° C.
  2. additionAfter the addition
  3. stirringthe mixture was stirred at room temperature for 5 h
  4. customDichloromethane was removed under reduced pressure
  5. customThe crude product was purified by flash chromatography

Sources & evidence

ORD record
ord-3a4c7ee668f14a3486374d01bdc2cf34
Source dataset
uspto-grants-2011_09
Patent number
US08012976B2

Reaction notes

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