L. Klemm, J. Karchesy, R. Lawrence
May 1, 1978
Citations
0
Influential Citations
3
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Phenanthro[4,5-bcd]thiophene (1) is converted into phenanthrene (2) (50%) and a mixture of methylphenanthrenes (3) (12%) by means of methanol and a sulfided cobaltous oxide-molybdic oxide-aluminum oxide catalyst (CMA-1) at 450° in a flow system. Similarly, 2 gives 3; and 4-methylphenanthrene yields 2 plus 3 (main component 3-methylphenanthrene) under the same reaction conditions. Mechanisms of the reactions are discussed. A facile chromatographic separation for 1- and 4-keto-1,2,3,4-tetrahydrophenanthrenes is presented.