Photocycloaddition of (Z)-1,2-dichloroethylene to enantiopure 2(5H)-furanones: an efficient strategy for the diastereoselective synthesis of cyclobutane and cyclobutene derivatives
作者:Ramon Alibés、Pedro de March、Marta Figueredo、Josep Font、Marta Racamonde、Albert Rustullet、Angel Alvarez-Larena、Juan F. Piniella、Teodor Parella
DOI:10.1016/s0040-4039(02)02528-5
日期:2003.1
A highly stereoselective and efficient synthetic approach to cyclobutane and cyclobutene derivatives has been developed consisting of a [2+2] photochemical cycloaddition of chiral 2(5H)-furanones to (Z)-1,2-dichloroethylene followed by dihydrodehalogenation or dihaloelimination.
Highly efficient approach to (+)-grandisol via a diastereoselective |2+2| Photocycloaddition to 2(5H)-furanones
作者:Ramón Alibés、José L. Bourdelande、Josep Font
DOI:10.1016/s0040-4039(00)60151-x
日期:1993.11
A new approach to (+) and (-)-grandisol is described through a diastereoselective photocycloaddition of ethylene to an easily available homochiral butenolide. Optically pure intermediates are obtained.