In the presence of a nickel catalyst and excess amounts of DBU and Me2Zn, various 1-trimethylsilylallenes smoothly reacted with two equivalents of carbon dioxide at an ambient temperature and pressure in regio- and stereoselective manners to provide 1-trimethylsilylprop-1-ene-2,3-dioic acid derivatives. A short total synthesis of chaetomellic acid A anhydride was achieved using this method.
在
镍催化剂和过量的
DBU与Me2Zn存在下,各种1-三甲基
硅烷丙烯顺利地在常温常压下与两个当量的
二氧化碳进行区域选择性和立体选择性的反应,生成1-三甲基
硅烷-丙-1-烯-2,3-二
羧酸衍
生物。采用这种方法成功完成了对千里光酸A酸酐的短程总合成。