The development of a versatile method for the synthesis of spirocyclic pyrrolidinoindolines is discussed. Treatment of N-acyltryptamines with trifluoromethanesulfonic anhydride–2-chloropyridine reagent combination affords highly persistent spiroindoleninium ions that are subject to intra- and intermolecular addition at C2 by nucleophiles.
讨论了合成螺环
吡咯烷二氢
吲哚的通用方法的开发。用
三氟甲磺酸酐-2-
氯吡啶试剂组合处理N-酰基
色胺可得到高度持久的螺
吲哚鎓离子,这些离子会被亲核试剂在 C2 处进行分子内和分子间加成。