Imidazole → 3,5-Dimethoxybenzyl tert-butyldiphenylsilyl ether

HRID 1060478

反応式

HRID 1060478 の反応式
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:8]=[C:9]([O:11][CH3:12])[CH:10]=1)[CH2:6][OH:7].[Si:13](Cl)([C:26]([CH3:29])([CH3:28])[CH3:27])([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.N1C=CN=C1>CN(C=O)C>[CH3:12][O:11][C:9]1[CH:8]=[C:5]([CH2:6][O:7][Si:13]([C:26]([CH3:29])([CH3:28])[CH3:27])([C:20]2[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=2)[C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH:4]=[C:3]([O:2][CH3:1])[CH:10]=1

参加物

5

反応物 3

HCID 795ImidazoleHCID 697183,5-Dimethoxybenzyl alcoholHCID 94078tert-Butyldiphenylchlorosilane

生成物 1

HCID 225718833,5-Dimethoxybenzyl tert-butyldiphenylsilyl ether収率 87.9%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

A mixture of 3,5-dimethoxybenzyl alcohol (4.0 g), t-butyl-diphenylsilyl chloride (6.54 g) and imidazole (3.28 g) in DMF (60 mL) was stirred at room temperature for 24 h. DMF was evaporated and the residue was purified by column chromatography (silica gel; eluent: hexane to hexane/EtOAc 20%) to yield 8.5 g of 3,5-dimethoxy-1-[(t-butyldiphenylsilyloxy)methyl]benzene. ESMS: m/z 407 (MH+).

後処理

  1. customDMF was evaporated
  2. customthe residue was purified by column chromatography (silica gel; eluent: hexane to hexane/EtOAc 20%)

出典と根拠

ORDレコード
ord-4841f5c4415d4c9b8f8776b2224e030b
出典データセット
uspto-grants-2003_02
特許番号
US06521666B1

関連ノート

読み込み中…