A one-pot, sequential 2,3-bis-functionalization of indoles bearing N-tethered vinylogous carbonates employing an intramolecular oxa-PictetâSpengler reaction followed by electrophilic substitution is developed for the stereoselective synthesis of oxazino[4,3-a]indoles.
                                    利用分子内 oxa-PictetâSpengler 反应和亲电取代,开发了一种单锅、连续的 2,3-双官能化
吲哚(含 N-系链
乙烯基碳酸盐)的方法,用于立体选择性合成噁嗪并[4,3-a]
吲哚。