TETRAHEDRON, cilt.65, sa.31, ss.5973-5976, 2009 (SCI-Expanded)
We hereby report the first preparation of the 3,4-dihydrofuro[3,2-d]pyrimidin-2(1H)-one skeleton formed by two controlled Curtius rearrangements of the corresponding acyl azides, prepared from 2-(2-methoxy-2-oxoethyl)furan-3-carboxylate via the hydrazide. Rearrangement of the acyl azides followed by trapping by nucleophiles and intramolecular trapping provided the target compounds. (C) 2009 Elsevier Ltd. All rights reserved.