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1,3-Dipolar cycloadditions of 3-methylenecephams with diazoalkanes

✍ Scribed by Jack E. Baldwin; Janos Pitlik

Book ID: 104228652
Publisher: Elsevier Science
Year: 1990
Tongue: French
Weight: 215 KB
Volume: 31
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)97395-7

No coin nor oath required. For personal study only.

✦ Synopsis

The 3-methylenecephams underwent I .3-dipolar cycloaddition reactions with diazomethane to give spiropyrazolinocephams in a completely stereo-and regioselective manner. Thermal breakdown of these I-pyrazolines led to spirocyclopropane and vinyl derivatives.

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