110810-03-2Relevant articles and documents
RING-CHAIN TAUTOMERISM OF ORTHO-AMINO-SUBSTITUTED AROMATIC CARBOXYLIC ACID HYDRAZONES, I. FORMATION OF 1,2,3,4-TETRAHYDRO-5H-1,3,4-BENZOTRIAZEPIN-5-ONES AND 5,6,7,8-TETRAHYDDRO-4H-PYRAZOLOTRIAZEPIN-4-ONES
Gal, Melinda,Tihanyi, Endre,Dvortsak, Peter
, p. 55 - 68 (2007/10/02)
Reactions of ortho-amino-substituted aromatic carboxylic acid N-methylhydrazides 1a, 1c with acetaldehyde and simple ketones gave condensed triazepinones 4, whereas the N-unsubstituted hydrazides 1b furnished hydrazones 3.The role of N-substitution is dis