作者:Manfred Braun、Panos Meletis、Robin Visse
DOI:10.1002/adsc.201100372
日期:2011.12
Doubly deprotonated carboxylic acids undergo smooth palladium-catalyzed carbon alkylations with the allylic substrates methyl allyl carbonate and (E)-methyl (pent-3-en-2-yl) carbonate to give γ,δ-unsaturated carboxylic acids. A diastereoselective and enantioselective protocol leads to (2S,3R)-hexenoic acid in 87% ee.
双去质子化的羧酸与烯丙基底物碳酸甲基烯丙酯和(E)-甲基(戊-3-烯-2-基)碳酸酯进行平滑的钯催化的碳烷基化反应,得到γ,δ-不饱和羧酸。非对映选择性和对映选择性方案导致87%ee中的(2 S,3 R)-己酸。