Intramolecular acid catalysed cyclisation of the ketene dithioacetal S-oxide (3) from the o-toluenesulphonamidobenzaldehyde (2) leads to two indole derivatives (5) and (6), the structure (6) being confirmed by X-ray crystallography.
分子内酸催化的乙
烯酮二硫代缩醛环化小号
氧化物(3从)Ô -toluenesulphonamidobenzaldehyde(2)引出两个
吲哚衍
生物(5)和(6),所述结构(6)由证实X射线晶体学。