OPPOLZER, W.;SNOWDEN, R. L.;BRINER, P. H., HELV. CHIM. ACTA, 1981, 64, N 7, 2022-2028
作者:OPPOLZER, W.、SNOWDEN, R. L.、BRINER, P. H.
DOI:——
日期:——
Regioselective Alkylation of the Polyfunctional Nucleophile 1-(Methylthio)-3-triethylsilyloxypentadienyllithium
作者:Wolfgang Oppolzer、Roger L. Snowden、Paul H. Briner
DOI:10.1002/hlca.19810640706
日期:1981.11.4
γ-Selective sulfenylation of the triethysilyloxypentadienyllithium 1 gave the versatile alkylthiodene 4 which on successive deprotonation and alkylation furnished with high regioselectivity the γ-products 6. Fluoride-promoted silylether cleavage 6 7 may be followed by intramolecular [4 + 2]-addition 7c 8 and sulfoxide elimination 8 9. The conversions 7b 12 and 7a 17 demonstrate the feasibility of 5