- 作者: 林助強 ; 吳獻仁
- 作者服務機構: 交通大學應用化學系
- 中文摘要: Tetraacetal oxa-cage compounds 5a and 5b and convex oxa-cage compounds 7a and 8a are synthesized in a short sequence. Ozonolysis of endo adducts 2a and 2b in dichloromethane at -78.degree.C followed by reduction with dimethylsulfide gave tetraacetal oxa-cages 5a and 5b in 35% yields respectively. Ozonolysis of 2a in dichloromethane at-78.degree.C followed by treatment with triethylamine gave the convex oxa-cage 7a in 34% yield. These results support an acid-base proton transfer between the final ozonides and the base. The reasons that these oxa-cage compounds formed in low yields are discussed. The synthesis of tetraacetal oxa-cage 14, possessing aromatic substitutents directly on the skeleton of the oxa-cage, is accomplished.
- 英文摘要: --
- 中文關鍵字: Cage; Ozonolysis; Bicyclooctene; Tetraacetal Oxa-Cage; Convex Oxa-Cage
- 英文關鍵字: 籠;臭氧分解;雙環辛烯