1,3-O- to -C-alkyl migration of 1-alkenyl alkyl acetals and ketals catalyzed by boron trifluoride. Selective cross- and regioselective aldol type reactions
作者:Mitsuru Takahashi、Hiroharu Suzuki、Yoshihiko Moro-Oka、Tsuneo Ikawa
DOI:10.1016/s0040-4039(00)87026-4
日期:1982.1
1,3-Alkyl migration of 1-alkenyl alkyl acetals and ketals is effectively catalyzed by trifluoroborane etherate to give cross aldol type products selectively. Remarkable regio-selectivity is observed in the synthesis of α-alkyl-β-alkoxy-ketones.
三氟硼烷醚化物可有效催化1-烯基烷基缩醛和缩酮的1,3-烷基迁移,从而选择性地生成交叉的羟醛型产物。在α-烷基-β-烷氧基-酮的合成中观察到显着的区域选择性。