Metalation reactions—XIV: The generality of the 1.3-Sigmatropic shift of hydrogen in allenyllithium compounds

J Klein, JY Becker

Index: Klein,J.; Becker,J.Y. Tetrahedron, 1972 , vol. 28, p. 5387 - 5392

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Citation Number: 26

Abstract

Dimetalation of aliphatic 2-alkynes was observed in mild conditions in ether solution. Only 2- butyne has undergone monometalation exclusively. The dilithio compounds of 1-and 2- alkynes were attacked by electrophiles first at the 3-position. A 1.3-sigmatropic shift occurred