Dilithium cyanocuprates

RLi CuCN — R2Cu(CN)Li2 s a higher order dilithium cyanocuprate... [Pg.108]

Less reactive silyl metal species such as lithium bis(triphenylsilyl) cuprate react with a variety of acyl chlorides to give the corresponding acyl silanes in moderate to good yields75. Dilithium bis(trimethylsilyl) cyanocuprate is particularly effective for the preparation of sterically hindered acyl silanes (Scheme 8), and appears to provide a good general... [Pg.1609]

Dilithium diallylic cyanocuprates couple readily at -78° in THF with vinyl triflates to form 1,4-dienes (equation IV).10... [Pg.236]

Dilithium(trimethylstannyl) 2-thienyl)cyanocuprate, (CH3)3SnCu(2-Th)CNLi2 (l)17. The cuprate is prepared by addition of CH3Li (2 equiv.) in ether to a THF solution of [(CH3)3Sn]2 (1 equiv.) and thiophene (1 equiv.) the reagent is formed after addition of CuCN (1 equiv.). [Pg.228]

Novel organocuprates used in conjugate additions are 2-(trimethylgermyl)allylcopper(I) [MejS complex], dilithium bis[2-trimethylstannyl)vinyl]cyanocuprate, and the a-azoalkylcuprates. ... [Pg.233]

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