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.
The present invention relates to electronic devices, in particular organic electroluminescent devices, comprising compounds of the formula (1), to the corresponding compounds, and to a process for the preparation of these compounds.