regio- and stereoselective allylation of aldehydes by allenes proceeds smoothly in aqueous/organic media in the presence of PdCl(2)(PPh(3))(2), HCl, and SnCl(2). The reaction likely occurs via hydrostannylation of allenes and allylation of aldehydes by the in situ generated allyltrichlorotins to afford the final products.
[反应:参见正文]在PdCl(2)(PPh(3))(2),HCl和SnCl(2)的存在下,
水/有机介质中
丙二烯对醛的高度区域和立体选择性烯丙基化反应顺利进行。该反应可能是通过原位产生的烯丙基三
氯锡经烯丙基的加氢
苯乙烯基化和醛的烯丙基化而发生的,从而提供最终产物。