Molybdenum Nitride Complexes with Ph_3SiO Ligands Are Exceedingly Practical and Tolerant Precatalysts for Alkyne Metathesis and Efficient Nitrogen Transfer Agents

摘要

The first recorded examples of alkyne metathesis relied on the use of unidentified catalysts generated in situ from simple ingredients following empirically optimized recipes. Although these procedures are operationally simple, they require harsh conditions and are therefore of limited preparative value. It was only after the advent of structurally defined high-valent metal alkylidyne complexes that the full potential of this transformation could be exploited, for example, in applications to the total synthesis of complex natural products and materials science.