YOO, BR LEE, ME JUNG, IN 2024-01-21T23:10:38Z 2024-01-21T23:10:38Z 2021-09-02 1992-04 0276-7333 https://pubs.kist.re.kr/handle/201004/146455 Photolysis of 2,4-dineopentyl-1,1,3-triphenyl-3-vinyl-1,3-disilacyclobutane (1) in the presence of methanol and methoxytrimethylsilane gives three major products, ring-opened alkenylsilanes, trapping products of silaethenes, and six-membered-ring products. The results are consistent with the initial formation of 1,4-biradical intermediates which undergo three competing reactions: intramolecular hydrogen abstraction leading to alkenylsilanes, fragmentation to silaethenes, and ring closure to six-membered-ring silenes. This is the first evidence for the generation of a six-membered-ring silene by the novel ring-closure reaction involving the vinyl group on silicon. English AMER CHEMICAL SOC TERT-BUTYLLITHIUM SILAHETEROCYCLES PHOTOCHEMICAL RING-OPENING AND EXPANSION REACTION OF 2,4-DINEOPENTYL-1,1,3-TRIPHENYL-3-VINYL-1,3-DISILACYCLOBUTANE Article 10.1021/om00040a037 1 ORGANOMETALLICS, v.11, no.4, pp.1626 - 1632 ORGANOMETALLICS 11 4 1626 1632 scie scopus A1992HP32100037 2-s2.0-0011520480 Chemistry, Inorganic & Nuclear Chemistry, Organic Chemistry Article TERT-BUTYLLITHIUM SILAHETEROCYCLES photochemical ring-opening reaction 1,3-disilacyclobutane.