- 作者: 顏耀平、黃宗民、曾裕平、林炫羽、賴清正
- 作者服務機構: Department of Applied Chemistry, Providence University, Sha-Lu, Taichung, Taiwan 433, R.O.C.
- 中文摘要: 3,3-Dialkyl-4,5-diphenyl-3H-pyrazoles undergo readily photoinduced electron transfer (PET) reaction with 2,4,6-triphenylpyrylium tetrafluoroborate (TPP+) in acetonitrile to produce cyclopropenes and 2H-pyrroles. During prolonged irradiation, the new ring-closure products derived from 2H-pyrroles as the secondary photoproducts are also produced. However, the corresponding ester analog exhibits different behavior to obtain the cyclopropene as the primary photoproduct and a [2+2] dimer of the cyclopropene as the secondary photoproduct. A rationale for the different behavior is offered.
- 英文摘要: --
- 中文關鍵字: Photoinduced electron transfer; 3H-pyrazoles; Cyclopropene.
- 英文關鍵字: --