COOKSON R.; PARSONS P. J., J. CHEM. SOC. CHEM. COMMUN., 1978, NO 19, 821-822
作者:COOKSON R.、 PARSONS P. J.
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