The ozonolytic cleavage of cycloalkenes in the presence of methyl pyruvate to yield the terminally differentiated compounds
作者:Hon Yung-Son、Yanb Sann-Long
DOI:10.1016/0040-4039(93)88113-w
日期:1993.10
Chemoselective reaction on a hydroxy or aldehyde group tethered with a tri-substituted ozonide: A versatile methodology for the preparation of terminally differentiated compounds from cyclohexene
作者:Yung-Son Hon、Jiann-Long Yan
DOI:10.1016/s0040-4020(98)00452-9
日期:1998.7
Molecules containing a hydroxy or aldehydegroup tethered with a tri-substituted ozonide moiety were prepared. We have demonstrated that the ozonidegroup is stable under certain Lewis acidic, free radical, and organometallic conditions. Therefore, chemoselective elaboration of the hydroxy or aldehydegroup is possible under these conditions. These functional group transformations followed by the decomposition
Syntheses of bifunctional compounds from cycloalkenes via ozonide intermediates
作者:Yung-Son Hon、Jiann-Long Yan
DOI:10.1016/s0040-4020(97)00207-x
日期:1997.4
The ozonolytic cleavage of cycloalkene in the presence of methyl pyruvate affords a tri-substituted ozonide. The resulted tri-substituted ozonide moiety contained three reactive centers (i.e. peroxide, ozonide ring proton and methoxycarbonyl group) which could be transformed to different functional groups under different conditions in good yields. It is a very efficient and versatile methodology to prepare the terminal differentiated compounds from symmetric cycloalkenes in two steps in high yields. (C) 1997 Elsevier Science Ltd.