J. Ohlsson et al., Conjugation of amines and alpha-amino acid derivatives as pyrroles using tethered 1,4-diketones, ACT CHEM SC, 53(7), 1999, pp. 480-486
The preparation of two 1,4-diketones, and their subsequent Paal-Knorr react
ion with various primary amines and amino acid derivatives to give the corr
esponding pyrroles, is described.