GOLDING B. T.; HALL D. R., J. CHEM. SOC. PERKIN TRANS., PART 1, <JCPK-BH>, 1975, NO 15, 1517-1521
作者:GOLDING B. T.、 HALL D. R.
DOI:——
日期:——
Formation and reactions of ethyl 2,2-dimethyl-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-6-carboxylate, a penam analogue
作者:Bernard T. Golding、David R. Hall
DOI:10.1039/p19750001517
日期:——
U.v. irradiation of ethyl 2-diazo-3-(4,4-dimethyloxazolidin-3-yl)-3-oxopropionate (3) gives a product whose spectroscopic properties and reactions are consistent with its formulation as ethyl2,2-dimethyl-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-6-carboxylate (1d). Nucleophilic reagents rapidly cleave the β-lactam ring of compound (1d)[e.g. treatment with benzylamine yields the benzylamide (4a)]. In