The ring contraction of δ-lactones with leaving group α-substituents: a strategy for the synthesis of 2,5-disubstituted highly functionalised homochiral tetrahydrofurans
The ring contraction of δ-lactones with leaving group α-substituents: a strategy for the synthesis of 2,5-disubstituted highly functionalised homochiral tetrahydrofurans
作者:Sik-Man S. Choi、Paul M. Myerscough、Antony J. Fairbanks、Ben M. Skead、Claire J. F. Bichard、Simon J. Mantell、Jong Chan Son、George W. J. Fleet、John Saunders、David Brown
DOI:10.1039/c39920001605
日期:——
Treatment of derivatives of δ-lactones having a leaving group at C-2 with methanol in the presence of base gives methyl tetrahydrofuran-α-carboxylates in good to excellent yield with a high degree of stereocontrol of the carbon substituents at C-2 and C-5.