Lithium Bis-(diisopropylamino) boracetylide [LiC C B (Ni Pr 2) 2]. A new reagent for the preparation of terminal alkynes

C Blanchard, M Vaultier, J Mortier

Index: Blanchard, Christiane; Vaultier, Michel; Mortier, Jacques Tetrahedron Letters, 1997 , vol. 38, # 51 p. 8863 - 8866

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Citation Number: 9

Abstract

Terminal alkynes RC CH [R= PhCO, PhCH2OCO,(CH3) 2CHCH2OCO, Et2NCO,(EtO) 2P (O), PhCH2, H2C CH CH2, and Ph CH (OH)] may be prepared in satisfactory yield in a one-pot process by reaction in THF at− 78° C of the titled reagent with electrophiles followed by acidic workup with dilute HCl.