6‐Substituted benzoxazino isoquinoline nucleus, a key skeleton in some biological active molecules, can be prepared by a silver catalysed domino approach starting from 2‐alkynylbenzaldehydes and 1‐substituted (2‐aminophenyl)methanols. The silver(I) complexes of macrocyclic pyridine‐containingligands (PcL) demonstrated to be the catalysts of choice.