M. Satyanarayana Reddy

A FACILE SYNTHESIS OF 2,3-DISUBSTITUTED PYRIDO[2,3-h]QUINAZOLIN-4(3H)-ONES

ABSTRACT Synthesis of 2-substituted-4H-Pyrido[2,3-h]benzoxazin-4-ones (2) from 5-Aminoquinoline-6-carboxylic acid (1) and their conversion to 2,3-disubstituted Pyrido[2,3-h]quinazolin-4(3H)-ones(3) is reported.Synthesis of 2-substituted-4H-Pyrido[2,3-h]benzoxazin-4-ones (2) from 5-Aminoquinoline-6-carboxylic acid (1) and their conversion to 2,3-disubstituted Pyrido[2,3-h]quinazolin-4(3H)-ones(3) is reported.

One-Pot Synthesis of 2,3-Dihydro-2,3-disubstituted Benzo[g]-quinazolin-4(1H)-ones

Abstract Condensation of 2H-naphth[2,3-d][3,1] oxazin-2,4 (IH)-dione (1) with schiff bases (2) in acetic acid resulted in the formation of 2,3-dihydro-2,3-diarylbenzo[g]quinazolin-4(IH)-ones (3). Reaction of 1 with ketoanils generated in situ results in 2,3-dihydro-2,2-substituted-3-phenylbenzo[g]quinazolin-4 (IH)-ones (6) and the spiroalkanes (5). Dehydrogenation of 3 gave 2,3-diaryl benzo[g]quinazolin-4(3H)-ones (7).

One pot synthesis of 3-substituted 2H-naphtho[1,2-e][1,4]diazepin-2,5(1H, 4H)-diones

Abstract Synthesis of 3-substituted 2H-naphtho[1,2-e][1,4]diazepin-2,5(1H,4H)- diones (2) from the reaction of 2H-naphth[1,2-e][3,1]oxazin-2,4-(1H)-dione (1) with α-amino acids is reported.