1,3-双(烃基氯硅烷基)丙烷Cl_(3-m)R_mSi(CH_2)_3SiR’_nCl_(3-n)的合成及其与水、氨(胺)、硫化氢的反应已有较详尽的报道,但与活泼金属作用的偶联环化反应则涉及较少。我们分别以钾-钠合金、金属锂对1,3-双(二烃基氯硅烷基)丙烷进行偶联环化,合成了五个新的非对称1,1,2-三甲基-2-烃基-1,2-二硅杂环戊烷类化合物(1a～ The synthesis of 1,3-bis (hydrocarbylsilyl) propane Cl_ (3-m) R_mSi (CH_2) _3SiR’_nCl_ (3-n) and its reaction with water, ammonia and hydrogen sulfide have been exhaustive However, the coupling cyclization reaction with active metals involves less. We respectively coupled and cyclized 1,3-bis (dihydrocarbylchlorosilyl) propane with potassium-sodium alloy and lithium metal to synthesize five new asymmetric 1,1,2-trimethyl-2- Hydrocarbyl-1,2-disilacyclopentane compounds (1a ~