Photoinduced net [2 + 2 + 2] cycloreversion of platinum(II) glycolate complexes: a new approach to the generation of reduced, coordinatively unsaturated metal species and the activation of carbohydrate carbon-carbon single bonds
摘要:
Photolysis of thermally stable (1,2-bis(diphenylphosphino)ethane)platinum(II) glycolate complexes causes a facile net [2 + 2 + 2] cycloreversion of the 2,5-dioxaplatinacyclopentane moiety to give two organic carbonyl compounds and a reactive (dppe)Pt0 intermediate, as shown by trapping with dppe, ethylene, or hydrogen. Photolysis under hydrogen in the presence of (PPh3)4RuH2 leads to hydrocracking of the glycol carbon-carbon single bond.
La 分解 de (dppe)Pt(OCH 3 ) 2 a 25° donne un melange de甲醇, 低聚甲醛和 un peu de CO. Le complexe (dppe)Pt(CH 2 CH 3 )(OCH 3 ) se分解C 2 H 4 、C 2 H 6 、甲醇和甲醛低聚物的混合物 a 100°C