The reactivity of 4-hydroxy- and 4-silyloxy-1,5-allenynes with homogeneous gold(I) catalysts.
The reactivity of 4-hydroxy- and 4-silyloxy-1,5-allenynes with homogeneous gold(I) catalysts.
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4-羟基-和4-甲硅烷氧基-1,5-丙炔与均相金(I)催化剂的反应活性
DOI:
10.1021/acs.orglett.5b00348
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发表时间:
2015
期刊:
影响因子:
5.2
通讯作者:
S. F. Kirsch
中科院分区:
文献类型:
--
作者:
M. Wegener;S. F. Kirsch
Two new gold(I)-catalyzed cascade reactions of 4-hydroxy- and 4-silyloxy-1,5-allenynes are disclosed, offering access to a variety of mono- and bicyclic, polyunsaturated carbonyl compounds. The diverse reactivity observed for the investigated allenyne system is controlled by the nature of the unsaturated substrate: Allenynes bearing a free hydroxyl group engage in what is likely an oxycyclization/allene-ene carbocyclization cascade, while their silylated analogues are converted through a carbocyclization/pinacol-type rearrangement process.
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