作者:Peter Baeckström、Lanna Li
DOI:10.1016/s0040-4020(01)86580-7
日期:1991.8
involves the Claisen rearrangement of allyl vinyl ethers formed from allylic alcohols and the dimethyl acetal of methyl isopropenyl ketone, followed by LiAlH4 reduction of the α,β-unsaturated ketone formed by rearrangement. The α,β-unsaturated ketone was also transformed to the 2-methyl-1-propenyl group by using a one-pot deoxygenation reaction for the synthesis of (E)-β-farnesene, (E)-β-springene and
全反式无环类异戊二烯骨架是通过两步迭代序列制成的。该方法涉及由烯丙基醇形成的烯丙基乙烯基醚的克莱森重排和甲基异丙烯基酮的二甲基乙缩醛,然后通过重排形成的LiAlH 4还原α,β-不饱和酮。通过使用一锅脱氧反应来合成(E) -β-法呢烯,(E) -β-弹簧烯和树突蛋白,α,β-不饱和酮也被转化为2-甲基-1-丙烯基。