Abstract
The synthesis of 2-p-methoxyphenyl-10-ethyl-2H-1,3,2-oxaazaphosphorino[6,5-b)]pyrido[2’,3’-b)]indole-2,4-dithione has been achieved following treatment of Lawesson's reagent with 3-cyano- and 3-thiocarbamoyl-9-ethyl-α-carbolin-2-ones; the latter give rise to 2-mercapto-10-ethyl-2H-1,3,2-oxaazaphosphorino[6,5-b)]pyrido[2’,3’-b)]indole-2,4-dithione on heating with phosphorus pentasulfide.
References
1.
Cava M.P., Levinson M.I.
Tetrahedron,
1985
2.
Cherkasov R.A., Kutyrev G.A., Pudovik A.N.
Tetrahedron,
1985
3.
T. V. Golovko, N. P. Solov’eva and V. G. Granik, Mendeleev Commun. (in press)
4.
Nilov D.B., Kadushkin A.V., Solov’eva N.P., Granik V.G.
Mendeleev Communications,
1995
5.
Pedersen B.S., Lawesson S.-.
Tetrahedron,
1979