Chemical communications

Rhodium-catalyzed isomerization of unactivated alkynes to 1, 3-dienes

R Shintani, WL Duan, S Park, T Hayashi

Index: Shintani, Ryo; Duan, Wei-Liang; Park, Soyoung; Hayashi, Tamio Chemical Communications, 2006 , # 34 p. 3646 - 3647

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Citation Number: 4

Abstract

Under these conditions, the scope of this isomerization reaction is illustrated in Table 1.‡ Thus, substrates with a bulky primary alkyl group and ethyl group on the alkyne selectively provide terminal 1,3-dienes in 76–84% yield (entries 1–3). Alkynes with a secondary alkyl group and ethyl group are also isomerized to terminal 1,3-dienes selectively (entry 4). Alkynes bearing a longer alkyl substituent can also be employed to furnish internal 1,3-diene products, ...