Organic Syntheses via Transition Metal Complexes. 117.<sup>1</sup> 3-Aza-1-metalla-1,3,5-hexatrienes (M = Cr, W): Generation and π-Cyclization to Pyrroles
作者:Rudolf Aumann、Dominik Vogt、Roland Fröhlich
DOI:10.1021/om011032d
日期:2002.4.29
3-Aza-1-metallahexa-1,3,5-trienes 3a−f were obtained in good yields by condensation of the (NH2-amino)carbene complexes (CO)5MC(Ph)NH2 (1a,b; M = Cr, W) with α,β-unsaturated acid amides 2 in the presence of phosphoryl chloride and triethylamine. Compounds 3 undergo a thermally induced π-cyclization to pyrroles 4.