The first samarium(II)-mediated spirocyclisation onto an aromatic ring was achieved by the reaction of methyl 4-(4-oxoalkyl)benzoates with SmI2 in the presence of i-PrOH and HMPA, yielding methyl 1-alkyl-1-hydroxyspiro[4.5]dec-6-ene-8-carboxylates in moderate to high yields.
在 i-PrOH 和 HMPA 存在下,4-(4-
氧代烷基)
苯甲酸甲酯与
SmI2 发生反应,首次实现了
钐(II)介导的芳环螺环化反应,以中等至高产率生成了 1-烷基-1-羟基螺[4.5]癸-6-
烯-8-
羧酸甲
酯。