ONGANIA, K. -H.;PAWLOWSKI, R., Z. NATURFORSCH., 1984, 39, N 1, 95-100
作者:ONGANIA, K. -H.、PAWLOWSKI, R.
DOI:——
日期:——
Simple and condensed β-lactams. Part 20. Reaction of some 1-(4-methoxyphenyl)azetidin-2-ones with cerium(IV) ammonium nitrate (CAN): Trapping of the quinone imine intermediate with chloride and iodide anions
1-(4-methoxyphenyl)azetidin-2-ones 12 and 13, when treated with cerium(IV) ammoniumnitrate (CAN), afford either their N-deprotected derivatives (19, 26) or the chlorinated compounds 22 and 27, respectively, as the main products, depending on whether sodiumchloride was present or not. A series of minor products (20, 21, 23–25 and 29, respectively) are formed in addition. 1-(4-Methoxyphenyl)azetidin-2-ones