1,4-Diazepinone and Pyrrolodiazepinone Syntheses via Homoallylic Ketones from Cascade Addition of Vinyl Grignard Reagent to α-Aminoacyl-β-amino Esters
作者:Hassan S. Iden、William D. Lubell
DOI:10.1021/ol061036k
日期:2006.8.1
were synthesized from common homoallylic ketone precursors 4 prepared by copper-catalyzed cascade addition of a vinyl Grignardreagent to alpha-aminoacyl beta-amino esters 3. Nitrogen deprotection and intramolecular reductive amination yielded 1,4-diazepinones 5. Olefin oxidation, Boc removal, and intramolecular Paal-Knorr condensation gave pyrrolodiazepinones 8 and 9. X-ray structures of diazepinones