A short synthesis of (±)-laurene: mechanistic reinvestigation in palladium-catalyzed cycloreductions of 1,6-enynes
作者:Chang Ho Oh、Je Wook Han、Joo Sung Kim、Sung Yong Um、Hyung Hoon Jung、Won Hyung Jang、Ho Shik Won
DOI:10.1016/s0040-4039(00)01484-2
日期:2000.10
Two palladium-catalyzed cycloreduction strategies have been applied for the synthesis of laurene. Palladium-catalyzedcyclizations of 1,6-enynes initially form the corresponding alkylpalladium intermediates. While triethylsilane could directly reduce the intermediates to lead to the corresponding cycloreduced products, the intermediates in the presence of even excess formic acid underwent β-elimination