Cyclizations during the Grignard Reactions of co-Bromoalkynes

…, WJ Michaely, F Collonges, DJ Nelson, TA Ayers…

文献索引：Crandall, Jack K.; Michaely, William J.; Collonges, Francois; Nelson, Deanna J.; Ayers, Timothy A.; Gajewski, Joseph J. Croatica Chemica Acta, 1996 , vol. 69, # 4 p. 1473 - 1490

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被引用次数: 2

摘要

Sažetak The Grignard reactions of a number of (ö-bromoalkynes have been shown to undergo regioselective cyclizations in certain instances to give the smaller possible carbocycle. These cyclizations are shown to result from two competing processes, whose relative efficiencies depend upon the chain length and the remote substitutent on the acetylene. These are interpreted as a radical cyclization which occurs only during the time ...