Photochemistry of 1-aryl-4-(pentamethyldisilanyl)buta-1,3-diynes: photoreaction with acetone and dimethyl fumarate
作者:Sang Chul Shim、Seong Taek Lee
DOI:10.1039/p29940001979
日期:——
(4–8)via silacyclopropene intermediates. Photoreaction of 1-aryl-4-(pentamethyldisilanyl)buta-1,3-diynes with dimethyl fumarate gives two-atom insertion products (9 and 13)via silacyclopropene and/or [2 + 2] photocycloaddition products (10–12 and 14). The silacyclopropene intermediates are formed from singlet excited states in compounds 1 and 2, but from the triplet excited state in compound 3.
的1-芳基-4-(pentamethyldisilanyl)丁-1,3-二炔(照射1 - 3 1个加合物(:用丙酮产率的位点特异性和区域选择性1)4 - 8)经由silacyclopropene中间体。1-芳基-4-(五甲基二甲硅烷基)buta-1,3-二炔与富马酸二甲酯的光反应通过硅环丙烯和/或[2 + 2]光环加成产物(10 – 12和14)生成两个原子的插入产物(9和13)。)。硅环丙烯中间体是由化合物1和2中的单重激发态形成的,但是从化合物3的三重态激发的。