Sodium borohydride treatment of the enantiomerically pure tricarbonyl(g6-arene) chromium(0) complexed b-lactam 7 promoted a stereoselective ring opening–ring closure reaction sequence leading to the novel dihydrobenzopyran derivative 9 in good yield.
Dihydrobenzopyran skeleton from β-lactams: a stereoselective ring opening-ring closure reaction sequence / P. Del Buttero, G. Molteni, A. Papagni, T. Pilati. - In: TETRAHEDRON-ASYMMETRY. - ISSN 0957-4166. - 16:5(2005), pp. 971-974. [10.1016/j.tetasy.2004.11.096]
Dihydrobenzopyran skeleton from β-lactams: a stereoselective ring opening-ring closure reaction sequence
P. Del Buttero;G. Molteni;
2005
Abstract
Sodium borohydride treatment of the enantiomerically pure tricarbonyl(g6-arene) chromium(0) complexed b-lactam 7 promoted a stereoselective ring opening–ring closure reaction sequence leading to the novel dihydrobenzopyran derivative 9 in good yield.
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