boxylic acids and their esters) undergo partial hydrodebromination at the treatment with isopropyl magnesium bromide (3–6 mol-equiv) in THF and then in methanol at −60°C affording the corresponding monobromides in 64–95% yields. The addition of nonsolvated magnesium bromide to the reaction mixture results in the considerable reduction of the amount of the Grignard reagent (from 6 to 3 mol-equiv). This
的功能衍
生物,宝石-dibromocyclopropanes(醚和酯宝石dibromocyclopropylmethanol,2,2- dibromocyclopropanecarboxylic酸和它们的酯)采取与
异丙基溴化镁的治疗经受局部hydrodebromination(3-6摩尔-当量)的THF,然后在
甲醇中在- 60°C时可获得相应的一
溴化物,收率为64–95%。向反应混合物中添加非溶剂化的
溴化镁会导致
格氏试剂的量显着减少(从6摩尔当量降至3摩尔当量)。这允许实现2,2-二
溴环丙烷羧酸的部分加氢脱
溴。