Palladium-catalyzed reaction of tributyltin hydride. Selective and very mild deprotection of allyl and allyloxycarbonyl derivatives of amino-acids.
作者:F Guibe、O Dangles、G Balavoine
DOI:10.1016/s0040-4039(00)84530-x
日期:——
Allyl(All) and Allyloxycarbonyl(Alloc) amino-acid derivatives are deprotected through palladium-catalyzed hydrostannolysis by Bu3SnH in a highly selective manner. Benzyl and benzyloxycarbonyl groups are stable under these conditions. Moreover the allyl and Alloc groups seem orthogonal to the t-butyl and t-butoxycarbonyl protecting groups.
烯丙基(All)和烯丙氧基羰基(Alloc)氨基酸衍生物通过Bu 3 SnH以高选择性的方式通过钯催化的氢化锡烷基水解进行脱保护。苄基和苄氧羰基在这些条件下是稳定的。此外,烯丙基和Alloc基团似乎与叔丁基和叔丁氧羰基保护基团正交。