Journal of Photoscience
- 제1권2호
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- Pages.119-122
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- 1994
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- 1225-8555(pISSN)
PHOTOCHEMISTRY OF 1-PHENYL-4-(PENTAMETHYLDISILANYL)BUTA-1,2-DIYNE:$[PdCI_2(PPh_3)_2]$ -CATALYZED REACTION
- Lee, Seong-Taek (Department of Chemistry, The Korea Advanced Institute of Science and Technology) ;
- Baek, Eun-Kyung (Department of Chemistry, The Korea Advanced Institute of Science and Technology) ;
- Shim, Sang-Chul (Department of Chemistry, The Korea Advanced Institute of Science and Technology)
- 발행 : 1994.06.01
초록
$PdCI_2(PPh_3)_2$-catalyzed photolysis of 1-phenyl-4-(pentamethyldisilanyl)buta-1,3-diyne (1) in dry benzene gives 1,4-disilacyclohexa-2,5-diene type dimerization products(3-6) via silacyclopropene. The silacyclopropene is formed from the singlet excited state of 1 and this silacyclopropene reacts with $(PPh_3)_2Pd^0$to form palladasilacyclobutene. In this reaction, the silylene-palladium complex is generated and reacts with 1 to give another silacyclopropene. $PdCI_2(PPh_3)_2$catalyzed photolysis of 1 with other alkynes supports the involvement of this silylene complex.
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