3-bromo-4-bromomethylfuran | 163914-12-3

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 芳基卤化物
• 英文名称: 3-bromo-4-bromomethylfuran
• 英文别名: 3-Bromo-4-(bromomethyl)furan
• CAS: 163914-12-3
• 化学式: C₅H₄Br₂O
• 分子量: 239.894
• InChiKey: NTZCBYORZHJMRP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  8
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  3-bromo-4-bromomethylfuran 在 叔丁基锂 、 二异丙胺 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 (R)-5-(1-{(2S,3S,4R,5S)-5-[(2S,3S)-3-((1R,2S)-1-Methyl-2-trimethylsilanyloxy-propyl)-oxiranylmethyl]-3,4-bis-trimethylsilanyloxy-tetrahydro-pyran-2-ylmethyl}-vinyl)-5,6-dihydro-cyclopenta[c]furan-4-one
  参考文献：
  名称：

  Preparation of E-(2-substituted-1-methylethylidene)indanones derived from monic acid

  摘要：

  Alkylation of the lithium dienolate of the monic acid hydroxamate (3) with o-bromo(bromomethyl) benzene or heteroaromatic derivatives gave alpha-alkylated products (5). This alkylation procedure wa surprisingly catalysed by 4-dimethylaminopyridine. Metal-halogen exchange with t-butyl lithium occurred with concomitant intramolecular cyclisation to give a mixture of the deconjugated ketones (6). Reconjugation with potassium t-butoxide stereoselectively produced with the E-isomer (7). Deprotection gave the monic acid derived ketone (1).

  DOI：

  10.1016/s0040-4039(00)73095-4
• 作为产物：
  描述：

  4-bromofuran-3-carbaldehyde 在 sodium tetrahydroborate 、 三溴化磷 作用下， 以 乙醚 、 乙醇 、 水 为溶剂， 反应 3.0h， 生成 3-bromo-4-bromomethylfuran
  参考文献：
  名称：

  Preparation of E-(2-substituted-1-methylethylidene)indanones derived from monic acid

  摘要：

  Alkylation of the lithium dienolate of the monic acid hydroxamate (3) with o-bromo(bromomethyl) benzene or heteroaromatic derivatives gave alpha-alkylated products (5). This alkylation procedure wa surprisingly catalysed by 4-dimethylaminopyridine. Metal-halogen exchange with t-butyl lithium occurred with concomitant intramolecular cyclisation to give a mixture of the deconjugated ketones (6). Reconjugation with potassium t-butoxide stereoselectively produced with the E-isomer (7). Deprotection gave the monic acid derived ketone (1).

  DOI：

  10.1016/s0040-4039(00)73095-4

文献信息

• Preparation of E-(2-substituted-1-methylethylidene)indanones derived from monic acid
  作者：Neil D. Pearson、Nigel J.P. Broom、Peter J. O'Hanlon

  DOI：10.1016/s0040-4039(00)73095-4

  日期：1994.5

  Alkylation of the lithium dienolate of the monic acid hydroxamate (3) with o-bromo(bromomethyl) benzene or heteroaromatic derivatives gave alpha-alkylated products (5). This alkylation procedure wa surprisingly catalysed by 4-dimethylaminopyridine. Metal-halogen exchange with t-butyl lithium occurred with concomitant intramolecular cyclisation to give a mixture of the deconjugated ketones (6). Reconjugation with potassium t-butoxide stereoselectively produced with the E-isomer (7). Deprotection gave the monic acid derived ketone (1).