Rhodium-or iridium-catalyzed trans-hydroboration of terminal alkynes, giving (Z)-1-alkenylboron compounds

T Ohmura, Y Yamamoto, N Miyaura

Index: Ohmura, Toshimichi; Yamamoto, Yasunori; Miyaura, Norio Journal of the American Chemical Society, 2000 , vol. 122, # 20 p. 4990 - 4991

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Citation Number: 180

Abstract

Hydroboration of alkynes is a practical route for the syntheses of 1-alkenylboron compounds which are a versatile reagent for organic synthesis. 1, 2 Although much attention has been recently focused on the metal-catalyzed hydroboration with catecholborane (1a) or pinacolborane (1b), both the uncatalyzed1, 3 and the catalyzed reactions4, 5 yield (E)-1- alkenylboronates through the anti-Markovnikov and syn-addition of borane to terminal ...

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