Diastereoselective alkylation of the dianion of 5-ethoxy-4(S)-hydroxy-1-isopropyl-2-pyrrolidinone; Synthesis of enantiomerically pure azabicycles
作者:Wim J. Klaver、Henk Hiemstra、W.Nico Speckamp
DOI:10.1016/s0040-4039(01)81047-9
日期:1987.1
The alkylation of the dianion of the title compound () readily prepared from (S)-malic acid, with ω-iodo-1-trimethylsilyl-2-alkynes (-) occurs with high trans-selectivity with respect to the hydroxyl function. The products (-) cyclize in formic acid to enantiomerically pure azabicyclic allenes (-), one of which () might be a suitable precursor to peduncularine ().