Five-, four-, and three-membered carbocyclic rings from 2-deoxyribose by intramolecular nucleophilic displacement reaction
作者:Karsten Krohn、Guido Boerner
DOI:10.1021/jo00021a015
日期:1991.10
1,3-Dithianes such as 4, 9, 11, 13, and 19 derived from 2-deoxy-D-ribose (1) undergo intramolecular displacement reactions to give three-, four-, and five-membered carbocyclic rings (5, 10, 12, 15, and 20). Cyclopropanes are favored over the cyclobutanes when starting from the epoxides 9 or 11. Treatment of the tosylate 19 gives only a small yield of the corresponding cyclobutane 20, the major product being the ketone 21.