A one-pot coupling–addition–cyclocondensation sequence (CACS) to 2-substituted 3-acylpyrroles initiated by a copper-free alkynylation
作者:Jan Nordmann、Thomas J. J. Müller
DOI:10.1039/c3ob41269e
日期:——
A novel three-component synthesis of 2-substituted 3-acylpyrroles can be initiated by a copper-free Pd-catalyzed alkynylation in a one-pot fashion. The reaction sequence proceeds under mild reaction conditions and in moderate to good yields with a broad scope of diversity.
Herein, a new strategy for the directsynthesis of functionalized pyrroles from β-aminoalcohols and ynones via ruthenium-catalyzed acceptorless dehydrogenative coupling has been demonstrated. This developed methodology proceeds in an atom- and step-economic fashion together with the merits of broad substrate scope, operational simplicity, and water and hydrogen gas as the sole by-products, which provides