Benzyl Bromide → 9-[(phenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one

HRID 51351

反応式

HRID 51351 の反応式
[C:1]([C:5]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:6]=1[C:7]1[C:8](=[O:18])[CH2:9][CH2:10][CH2:11][C:12]=1[NH:13]2)([O:3][CH3:4])=[O:2].[CH2:19](Br)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[C:20]1([CH2:19][N:13]2[C:12]3[CH2:11][CH2:10][CH2:9][C:8](=[O:18])[C:7]=3[C:6]3[C:14]2=[CH:15][CH:16]=[CH:17][C:5]=3[C:1]([O:3][CH3:4])=[O:2])[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

参加物

6

反応物 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 11368514methyl 4-oxo-2,3,4,9-tetrahydro-1H-carbazole-5-carboxylate

生成物 1

HCID 223377289-[(phenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one収率 79.4%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

A suspension of 5-carbomethoxy-1,2-dihydro-9H-carbazol-4(3H)-one (300 mg, 1.23 mM), benzyl bromide (210 mg, 1.23 mM), and potassium carbonate (170 mg, 1.23 mM) in 15 mL DMF was stirred at room temperature for 6 hours. The mixture was diluted with 80 mL H2O and chilled in the refrigerator. The resultant white precipitate was collected by filtration, washed with H2O, and dried in vacuo to afford 325 mg (79%) of the 9-[(phenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one as a white solid. 1H NMR (DMSO-d6) δ7.7 (dd, 1H, J=1 and 8 Hz), 7.45-7.0 (m, 7H), 5.6 (s, 2H), 3.8 (s, 3H), 3.05 (t, 2H, J=6 Hz), 2.5 (t, 2H, J=6 Hz), and 2.2 (m, 2H). IR (KBr, cm−1) 3421, 1726, 1676, 1636, 1473, 1450, 1435, 1288, 1122, 764, 745, and 706. MS (ES) m/e 334.

後処理

  1. temperaturechilled in the refrigerator
  2. filtrationThe resultant white precipitate was collected by filtration
  3. washwashed with H2O
  4. customdried in vacuo

出典と根拠

ORDレコード
ord-ec4438b4bcf44b9895db629bc3d1f8ee
出典データセット
uspto-grants-2004_03
特許番号
US06713645B1

関連ノート

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