2-bromo-4-(hydroxymethyl)-6-methoxyphenyl trifluoromethanesulfonate | 137898-17-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-bromo-4-(hydroxymethyl)-6-methoxyphenyl trifluoromethanesulfonate
• 英文别名: [2-bromo-4-(hydroxymethyl)-6-methoxyphenyl] trifluoromethanesulfonate
• CAS: 137898-17-0
• 化学式: C₉H₈BrF₃O₅S
• 分子量: 365.125
• InChiKey: VMRBIGCUYVXCSJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.18
• 重原子数：
  19.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  72.83
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  烯丙基三丁基锡 、 2-bromo-4-(hydroxymethyl)-6-methoxyphenyl trifluoromethanesulfonate 在 bis-triphenylphosphine-palladium(II) chloride 、 三苯基膦 、 lithium chloride 2,6-二叔丁基-4-甲基苯酚 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 以67%的产率得到2-allyl-4-(hydroxymethyl)-6-methoxyphenyl trifluoromethanesulfonate
  参考文献：
  名称：

  Palladium-catalyzed cross-coupling reactions of highly hindered, electron-rich phenol triflates and organostannanes

  摘要：

  The palladium-catalyzed cross-coupling reaction of highly hindered, electron-rich phenol triflates and organostannanes (Stille reaction) has been studied in a systematic manner. The following are its salient features: (1) electron-rich phenol triflates require triphenylphosphine to undergo palladium-catalyzed cross-couplings; (2) in general, efficient reactions take place only when larger-than-usual amounts (10-15%) of palladium are employed. On the reagent side, alkyl- (methyl only), allyl-, vinyl- and alkinylstannanes undergo efficient cross-couplings with the title substrates. However, some limitations to this novel entry to 2-substituted resorcinols exist in regard to both substrates and reagents. Thus, conformationally rigid (hexasubstituted) aryl triflates behave poorly, demethylation being an important side reaction. Moreover, alkyl groups other than methyl cannot be introduced because beta-elimination occurs more rapidly. The potentially powerful synthesis of hindered biaryls has also been studied briefly. In the present conditions, the reaction appears to be limited by the presence of ortho substituents on the arylstannane moiety.

  DOI：

  10.1021/jo00028a051
• 作为产物：
  描述：

  三氟甲磺酸酐 、 2-bromo-4-(hydroxymethyl)-6-methoxyphenol 在 2,4,6-三甲基吡啶 作用下， 以 二氯甲烷 为溶剂， 以81%的产率得到2-bromo-4-(hydroxymethyl)-6-methoxyphenyl trifluoromethanesulfonate
  参考文献：
  名称：

  Palladium-catalyzed cross-coupling reactions of highly hindered, electron-rich phenol triflates and organostannanes

  摘要：

  The palladium-catalyzed cross-coupling reaction of highly hindered, electron-rich phenol triflates and organostannanes (Stille reaction) has been studied in a systematic manner. The following are its salient features: (1) electron-rich phenol triflates require triphenylphosphine to undergo palladium-catalyzed cross-couplings; (2) in general, efficient reactions take place only when larger-than-usual amounts (10-15%) of palladium are employed. On the reagent side, alkyl- (methyl only), allyl-, vinyl- and alkinylstannanes undergo efficient cross-couplings with the title substrates. However, some limitations to this novel entry to 2-substituted resorcinols exist in regard to both substrates and reagents. Thus, conformationally rigid (hexasubstituted) aryl triflates behave poorly, demethylation being an important side reaction. Moreover, alkyl groups other than methyl cannot be introduced because beta-elimination occurs more rapidly. The potentially powerful synthesis of hindered biaryls has also been studied briefly. In the present conditions, the reaction appears to be limited by the presence of ortho substituents on the arylstannane moiety.

  DOI：

  10.1021/jo00028a051