ChemInform Abstract: A Novel Photochemical Transformation of Methyl 6-Chloro-3,4-dihydro-4- methyl-3-oxo-2H-1,4-benzoxazine-8-carboxylate to β-Lactams.
ChemInform（2010）
Abstract
Abstract A unique photoreaction of methyl 6-chloro-3,4-dihydro-4-methyl-3-oxo-2 H -1,4-benzoxazine-8-carboxylate in methanol gives four β -lactam compounds, methyl 6-chloro-2,9-dioxo-1-methyl-1-azaspiro[3.5]nona-5,7-diene-8-carboxylate and three stereoisomers of dimethyl 3-chloro-4-(1′-methyl-2′-oxoazetidin-4′-ylidene)-2-butene-1,1-dicarboxylate.
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Key words
novel photochemical transformation,cheminform abstract
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