Indium mediated γ-pentadienylation of conjugated aldehydes: synthons for hydrindanes by an oxy-Cope-cycloaddition strategy
作者:Alex Melekhov、Alex G Fallis
DOI:10.1016/s0040-4039(99)01540-3
日期:1999.11
of pentadienylindium to unsaturated aldehydes afforded the alcohols 7, from 1,2-addition, substituted with a 1,4-diene unit. Subsequent anionic oxy-Cope rearrangement provided the Michael 1,4-addition product 8. Wittig reaction followed by intramolecular [2+4] cycloaddition afforded the hydrindane skeleton in an enantioselective manner (five steps).
将戊二烯基铟加成到不饱和醛上,由1,2-加成得到被1,4-二烯单元取代的醇7。随后的阴离子氧基-Cope重排提供了迈克尔1,4-加成产物8。Wittig反应,然后进行分子内[2 + 4]环加成,以对映选择性的方式提供了氢化茚骨架(五个步骤)。