The thermal LiHal elimination of - and functional compounds provides a simple synthetic route to four-membered SiC and SiN rings. In attempts to inhibit dimerisation sterically, bulky silylmethyl and silylamino substituents were introduced (I–III). (Me3Si)3CSiF2R reacts with LiNHR′, 1,3- migration of a silyl group from carbon to the nitrogen (I, R′= 2,4,6-Me3C6H2) taking place. Substitution occurs
-和功能化合物的热LiHal消除为四元SiC和SiN环提供了简单的合成途径。为了试图在空间上抑制二聚作用,引入了庞大的甲
硅烷基甲基和甲
硅烷基
氨基取代基(I–III)。(ME 3 Si)的3分CSiF 2与LiNHRř发生反应',1,3-甲
硅烷基的迁移从碳与氮(I,R'= 2,4,6-ME 3 c ^ 6 ħ 2)取地方。仅当R'= SiMe 2 CMe 2(II,III)时才发生取代。