2,2,2-Trichloroethylsulphonyl, 2,2,2-trichloroethoxysulphonyl, and trifluoroacetyl isocyanates in β-lactam synthesis
作者:Anthony G. M. Barrett、Ashley Fenwick、Michael J. Betts
DOI:10.1039/c39830000299
日期:——
Condensation of the title isocyanates with olefins and subsequent dissolving-metal reduction (sulphonyl derivatives) or chromatography on Florisil (trifluoroacetyl derivatives) gave several N-unsubstituted β-lactams including two 8-aza-2-oxabicyclo[4.2.0]octan-7-one derivatives.