Tetrahedron

A convergent scheme for the stereoselective synthesis of 3'-nor-1-oxacephems

D Ha, W Hartwig

Index: Haebich, D.; Hartwig, W. Tetrahedron, 1984 , vol. 40, # 19 p. 3667 - 3676

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Citation Number: 9

Abstract

... All reactions were performed under a positive atmosphere of N, with the aid of a Firestone valve. Reactions see also ret. 4 j Î672 D. HÄBICH and W. HARTWIG were monitored by analytical thin-layer chroraatography using 5 x 10 ca TLC plates: silica gel 60 F-254, layer thickness 0.25 m», E. Merck. Silica gel columns for chroma tography utilized E. Merck silica gel 60 (230-400 mesh ASTM) and a slightly positive pressure of air. ...