4,4'-di-tert-butylbiphenyl; lithium; nickel dichloride in tetrahydrofuran Wittig type olefination reaction; 6 h; RefluxInert atmosphere; optical yield given as percent de;
in tetrahydrofuran T=0°C; 1 h; effect of different effectors (ZnCl2 etc.), stereoselectivity; Wittig reaction with various aldehydes and ylides; Product distribution;
参考文献
Geletneky, Christian; Foersterling, Frank-Holger; Bock, Willi; Berger, Stefan
Chemische Berichte, 1993 , vol. 126, # 11 p. 2397 - 2402
in tetrahydrofuran T=0°C; 1 h; add. of LiI or O=PPh3; change of selectivity in cat. multicomp. systems via concentrations; further agents-(salt effect); Product distribution;
