Studies On The Photocycloaddition Of α, α-bis (Cinnamyl) Ketenedithioacetal

A chemical subject prevent pollution from springhead is the main connotation of atom economic and green chemistry which is also entitaled by environmental innoxious chemistry, environmental friendly chemistry and clean chemistry get markedness regard at present time. Green organic synthesis is the most appropriate method preventing pollution calls for designing new chemical synthetical way, manufacture methods and chemical products to eliminate pollution of enviroment.Photochemstry is a subject which has straight contact of human life mainly about physical and chemical process of chemical reaction when light and substance reciprocity. During the development of photochemistry, organic photochemistry played an concernful roll at the understanding of hypostasis of light, chemical bond, electrocondition and inside atoms and the relationship among them. The researchers had pay much attention on the photocycloaddtion reaction of alkenes and acyl compounds.α- Oxo ketene dithioacetals are a kind of versatile intermediates in organic synthesis. Many compounds with special structures can be constructed from these intermediates, due to their special synthesis and the construction of natural products. Our research group have been studied on the synthesis and application of it for decade and have gained a lot of achievements, recently we got a series ofα- cinnamyl ketenedithioacetals simply, so it will be a good work to apply them in photocheistry.In this article, we gainedα- Oxo ketene dithioacetals andα,α- bis(cinnamyl) ketenedithioacetals in water and then got products of [ 2 + 2 ] photocycloaddition irradiated by light. We walk along a green synthetical way and apply one more application ofα-Oxo ketene dithioacetals.28 new compounds were synthesized and were conformated with IR, 1HNMR and 13CNMR etc.