An inexpensive, selective procedure for oxidizing α-methyl to α-formyl pyrroles pavel bobal
作者:David A. Lightner
DOI:10.1002/jhet.5570380531
日期:2001.9
α-Methylpyrroles are converted to α-formyl by sodium bromate in aqueous methanol in ∼60% yield. Adding 1% ceric ammonium nitrate as a co-oxidant brings the isolated yields of synthetically useful 2-formylpyrroles 2a-d up to ∼70%, or close to those found when using only the considerably more expensive ceric ammonium nitrate as oxidant.