An effective and selective conjugate propargylation reaction of stannylallenes to. alpha.,. beta.-unsaturated carbonyl compounds and. alpha.-nitro olefins
J Haruta, K Nishi, S Matsuda, S Akai…
Index: Haruta, Jun-ichi; Nishi, Koichi; Matsuda, Satoshi; Akai, Shuji; Tamura, Yasumitsu; Kita, Yasuyuki Journal of Organic Chemistry, 1990 , vol. 55, # 16 p. 4853 - 4859
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Citation Number: 42
Abstract
Stannylallenes (1) reacted with a,@-unsaturated carbonyl compounds and a-nitro olefins in the presence of TiCll to give the corresponding conjugate propargylation products. Thus, the reaction of 1 with cyclic and acyclic a,@-unsaturated carbonyl compounds (2) gave 6- propargylic ketones (3) in high yields. With a-nitro olefins (4), two types of products, 8- propargylic nitroalkanes (5) and a-propargylic ketones (6), were obtained selectively ...
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