Synthesis of cyclic ethers via the palladium catalyzed intramolecular hydrocarbonation of alkoxyallenes
作者:Shin Kamijo、Yoshinori Yamamoto
DOI:10.1016/s0040-4039(98)02681-1
日期:1999.2
The intramolecular hydrocarbonation of certain alkoxyallenes (1, 3 and 5), bearing active methine groups at the terminus of the carbon chain, proceeded smoothly in the presence of catalytic amounts of a palladium complex [Pd(OAc)2-dppb] to give 5- to 7-membered cyclic ethers (2, 4 and 6, respectively) in good to high yields.
在催化量的钯配合物[Pd(OAc)2 -dppb]存在下,某些在碳链末端带有活性次甲基的烷氧基丙二烯(1、3和5)的分子内烃化反应平稳进行,得到5 -高至高收率的7至7元环醚(分别为2、4和6)。