Electrophilic cyclizations are one of the major strategies for cyclofunctionalizations of alkenes. Selective selenocyclizations can be performed by adjusting various factors in such reactions. The nature of the electrophile, the counterion, solvents, and external additives coordinating to the electrophilic species are used to control the course of such cyclizations with high degrees of efficiency.
Acetal-initiated Prins bicyclization for the synthesis of hexahydrofuro-[3,4-c]furan lignans and octahydropyrano[3,4-c]pyran derivatives
作者:B. V. Subba Reddy、M. Ramana Reddy、B. Sridhar、Kiran Kumar Singarapu
DOI:10.1039/c4ob00305e
日期:——
An acetal-initiated Prins bicyclization approach has been developed for the stereoselective synthesis of hexahydrofuro[3,4-c]furan lignans. This also provides a direct way to generate a newseries of octahydropyrano[3,4-c]pyran derivatives in a single-step process.
已开发出一种缩醛引发的Prins双环化方法,用于六氢呋喃[3,4- c ]呋喃木脂素的立体选择性合成。这也提供了一种直接方法,可通过一步法生成一系列新的八氢吡喃并[3,4- c ]吡喃衍生物。