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- Lewis acid-catalysed reactions of 2,2,2-trichloroethyl 6-diazopenicillanate and imines: rearrangements of spiro-6-aziridine- and spiro-6-oxirane-penicillanates. X-Ray crystal structures of (3S,6′S]-2,2,2-trichloroethyl 3-[4-nitrophenyl)-1-phenylspiro[aziridine-2,6′-penicillanate] and (3S,7aR)-2,2,2-trichloroethyl 2,3,5,7a-tetrahydro-7-methoxy-2,2-dimethyl-6-(4-nitrophenyl)-5-oxopyrrolo[2,1-b]thiazole-3-carboxylate. Vincent J. Jephcote, D. Ivor John, David J. Williams
, J. Chem. Soc., Perkin Trans. 1
, 1986
, 2195