NOVEL CATALYTIC EFFECT OF LEAD ON THE REDUCTION OF A ZINC CARBENOID WITH ZINC METAL LEADING TO A GEMINAL DIZINC COMPOUND - ACCELERATION OF THE WITTIG-TYPE OLEFINATION WITH THE RCHX(2)-TICL4-ZN SYSTEMS BY ADDITION OF LEAD
K. Takai et al., NOVEL CATALYTIC EFFECT OF LEAD ON THE REDUCTION OF A ZINC CARBENOID WITH ZINC METAL LEADING TO A GEMINAL DIZINC COMPOUND - ACCELERATION OF THE WITTIG-TYPE OLEFINATION WITH THE RCHX(2)-TICL4-ZN SYSTEMS BY ADDITION OF LEAD, Journal of organic chemistry, 59(10), 1994, pp. 2668-2670
A catalytic amount of lead promotes further reduction of zinc carbenoi
d (ICH2ZnI) with zinc in THF to give a geminal dizinc compound (CH2(Zn
I)(2)), which is a key intermediate for the methylenation of carbonyl
compounds with a CH2I2, zinc, and TiC4 system.