A novel application of (PhO) 3 P-Cl 2 chemistry to the synthesis of 2-substituted and 2,3-disubstituted pyrroles from N-allylamides is illustrated. A mild procedure is used to generate the imino chloride intermediates, which are subsequently cyclized to pyrroles. The products are smoothly obtained in moderate to good overall yields.
A simple synthesis of 2,2′-bipyrroles from pyrrole
作者:Liangfeng Fu、Gordon W. Gribble
DOI:10.1016/j.tetlet.2008.10.034
日期:2008.12
2,2′-Bipyrroles, which are obvious precursors for the synthesis of 2,2′-bipyrrole-based natural products, are synthesized in three steps from pyrrole employing known pyrrolyl ketoalcohols by a sequential alcohol oxidation and Paal-Knorr pyrrolesynthesis.