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Stannyl-cupration of acetylenes and the reaction of the intermediate cuprates with electrophiles as a synthesis of substituted vinylstannanes

✍ Scribed by Barbero, Asunci�n; Cuadrado, Purificaci�n; Fleming, Ian; Gonz�lez, Ana M.; Pulido, Francisco J.; Rubio, Rosa

Book ID
121233353
Publisher
Royal Society of Chemistry
Year
1993
Weight
745 KB
Volume
14
Category
Article
ISSN
1472-7781

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## Abstract 1,3‐Diynes HCCCCR′ (1, R′  H or Ph) are converted by cuprates [RCuY]M′ (R  alkyl; Y  Cl, Br or R; M′  Li, MgCl or MgBr) into a mixture of [HC(CuY)C(R)CCR′]M′ (2) and [RCHC(CuY)CCR′]M′ (3). When R is n‐alkyl, adducts **2** are the major products; adducts **3** are prefere