SCHEDULED MAINTENANCE
In the presence of boron trifluoride–diethyl ether, 6-diazopenicillanate (1) and acetone, cyclopentanone, and acetophenone, gave mixtures of 6α-alkyl-6β-acylpenicillanates and thiazolo-oxazinones, which had been formed via C(5)–C(6) bond cleavage.
V. J. Jephcote and D. I. John, J. Chem. Soc., Perkin Trans. 1, 1986, 2203 DOI: 10.1039/P19860002203
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