Tetrahedron Letters p. 2483 - 2486 (1990)
Update date:2022-09-26
Topics:
Baldwin, Jack E.
Pitlik, Janos
The 3-methylenecephams underwent 1,3-dipolar cycloaddition reactions with diazomethane to give spiropyrazolinocephams in a completely stereo- and regioselective manner. Thermal breakdown of these 1-pyrazolines led to spirocyclopropane and vinyl derivatives.
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Doi:10.1021/ja01338a037
(1933)Doi:10.1021/acs.joc.0c01992
(2020)Doi:10.1039/c1ob06199b
(2011)Doi:10.1021/jo970435d
(1997)Doi:10.1016/0040-4039(90)80007-9
(1990)Doi:10.1016/S0040-4039(00)76287-3
(1966)
