Pak-Kan Chiu, Kon-Hung Lui, Prem Nath Maini
1987
Citations
0
Influential Citations
23
Citations
Journal
Journal of The Chemical Society, Chemical Communications
Abstract
Reaction of 2,2-dimethyl-1,4-diketones with liquid ammonia gives high yields of isolable 2-hydroxy-3,4-dihydro-2H-pyrroles (3) and (5) which are readily dehydrated to give separable mixtures of 3H-pyrroles and methylenedihydropyrroles, while less-substituted 1,4-diketones give analogous hydroxy-compounds (4) and (6) which are hitherto-unsuspected intermediates in the Paal–Knorr 1H-pyrrole synthesis.