作者:Masahiko Yamaguchi、Ryo Amemiya、Yoshio Nishimura
DOI:10.1055/s-2004-822363
日期:——
In the presence of catalytic amounts of GaCl3 (10 mol%) and 2,6-di(t-butyl)-4-methylpyridine (10 mol%), five- or six-membered ring ketones possessing α,α′-disubstituents are ethenylated at the α-carbon with triethylsilylethyne at 180 °C. The roles of the base are to inhibit decomposition of the products and to promote protodegallation of the organogallium intermediates.
在催化量的 GaCl3(10 摩尔%)和 2,6-二(叔丁基)-4-甲基吡啶(10 摩尔%)存在下,具有δ,δ′-二取代基的五元或六元环酮在 180 °C 下与三乙基硅基乙炔在δ-碳处发生乙烯基化反应。碱的作用是抑制产物的分解和促进有机镓中间体的原降解。