Lithium dimethylcuprate-Boron trifluoride etherate

Lithium dialkylcuprates-Boron trifluoride etherate, 208 Lithium dibutylcuprate-Boron trifluoride etherate, 208 Lithium dimethylcuprate-Boron trifluoride etherate, 208 Lithium tri-sec-butylborohydride, 21, 167, 248... [Pg.407]

Lithium dialkylcuprates-Boron trifluoride etherate, 208 Lithium diallylcuprate, 11 Lithium dibutylcuprate, 61, 208, 344 Lithium dibutylcuprate-Boron trifluoride etherate, 208 Lithium dimethylcuprate, 63, 151, 258 Lithium dimethylcuprate-Boron trifluoride etherate, 208 Organocopper reagents, 11, 61, 63, 131, 151, 207, 344 Organocopper reagents-Boron trifluoride etherate, 208 Organolithium reagents-Copper(I) halides, 58... [Pg.408]

When the chiral molybdenum Ti-allyl-substituted enone 147 was treated with lithium dimethylcuprate, formation of adduct 148 with fair selectivity was observed (Scheme 6.29) [69]. Interestingly, higher selectivities were obtained in the presence of boron trifluoride etherate. It is assumed that Lewis acid coordination induces the s-trans reactive conformation 149 [64]. Consequently, nucleophile attack anti to the molybdenum fragment should afford the major diastereomer 148. [Pg.209]