1982
DOI: 10.1139/v82-025
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Sulfur-free penicillin derivatives. VII. Multiple functionalization of 2-azetidinyl-3-methyl-2-butenoates

Abstract: SAUL WOLFE and CHIA-CHENG SHAW. Can. J. Chem. 60, 144 (1982). The title compounds, substituted with chlorine in the 4'-position and with phthalimido, 2,2,2-trichloroethoxycarbonylamino, or phenoxycarbonylamino in the 3'-position of the azetidinone ring, have been converted to bis-allylic formates via bromination of both methyl groups with excess N-bromosuccinimide, and displacement of both bromines by formate ions in methylene chloride solvent. The diformates react smoothly with a deficit of a boron halide to … Show more

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Cited by 6 publications
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