Reactivity of a polar silene toward terminal alkynes: Preference for C-H insertion over cycloaddition

Milnes K.K.; Pavelka L.C.; Baines K.M.

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Reactivity of a polar silene toward terminal alkynes: Preference for C-H insertion over cycloaddition

机译：极性硅烷对末端炔烃的反应性：与环加成反应相比，C-H插入优先

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A variety of terminal alkynes were added to Mes_2Si=CHCH _2t-Bu, 4, a naturally polarized silene. Three different modes of reactivity were observed: addition across the acetylenic C-H bond to give silylacetylenes 6a-i and 12, cycloaddition to give silacyclobutenes 7 and 9, and ene-addition to give vinylsilane 8. The reactivity of the naturally polarized silene 4 toward terminal alkynes is compared to that of nonpolar silenes.

机译：将多种末端炔烃添加到Mes_2Si = CHCH_2t-Bu，4（一种自然极化的硅烷）中。观察到三种不同的反应模式：跨越炔属CH键加成以得到甲硅烷基乙炔6a-i和12，环加成得到硅环丁烯7和9，和烯加成得到乙烯基硅烷8。天然极化的硅4对末端的反应性将炔与非极性硅进行比较。

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《Organometallics》 |2010年第22期|共10页
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Milnes K.K.; Pavelka L.C.; Baines K.M.;
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1. Reactivity of a polar silene toward terminal alkynes: Preference for C-H insertion over cycloaddition [J] . Milnes K.K., Pavelka L.C., Baines K.M. Organometallics . 2010,第22期

机译：极性硅烷对末端炔烃的反应性：与环加成反应相比，C-H插入优先
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3. Reactivity of a germene toward terminal alkynes: Competition between cycloaddition, ene-addition, and CH-insertion [J] . Pavelka L.C., Baines K.M. Organometallics . 2011,第8期

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Reactivity of a polar silene toward terminal alkynes: Preference for C-H insertion over cycloaddition

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