Gold-catalyzed intermolecular hydroalkoxylation of allenes; difference in mechanism between hydroalkoxylation and hydroamination
作者:Naoko Nishina、Yoshinori Yamamoto
DOI:10.1016/j.tetlet.2008.05.152
日期:2008.8
to produce allylic ethers 3. Contrary to the hydroamination, which proceeds through high chiral-face selectivity for chiral allenes to give the corresponding chiral allylic amines, transfer of chirality is not observed in the hydroalkoxylation, suggesting that the mechanism of the gold-catalyzed hydroalkoxylation is different from that of hydroamination.
在ClAuPPh 3 / AgOTf催化剂的存在下,在没有溶剂的情况下,各种各样的醇2与各种丙二烯1反应,生成烯丙基醚3。与通过手性烯丙基的高手性面选择性产生相应手性烯丙基胺的加氢胺化相反,在加氢烷氧基化中未观察到手性的转移,这表明金催化加氢烷氧基化的机理与加氢胺化不同。