Double heteroannulation of S,N-acetals: a facile access to quinolone derivatives†
Abstract
A rapid construction of quinolone fused heterocycles from single S,N-acetal precursors via double heteroannulation is described. The base, radical and metal-mediated reactions can control the C–N, C–S and C–O bond formations of the S,N-acetal with high chemoselectivity.