Ammonia as a weak base for continuous-flow synthesis of Au, Pd, and Cu-NHC heteroleptic chloro complexes
摘要
The use of weak, inexpensive bases in the assembly of late-transition metal NHC complexes represents a most promising synthetic strategy. We now disclose the use of gaseous and aqueous ammonia as bases for the continuous-flow synthesis of these complexes with Au, Pd, and Cu metal centers. The fully homogeneous system enables reactions to proceed under milder, faster, and more concentrated conditions than state-of-the-art methods.