-3-ACYLAMINO-5-ARYL-4,5-DIHYDRO-1H-1,2,4-TRIAZOLES - RING-CLOSURE PRODUCTS OF AROMATIC CARBALDEHYDE (DIAMINOMETHYLENE) HYDRAZONES WITH ACYLATING AGENTS

Authors
GYORGYDEAK Z HOLZER W KUNZ RW LINDEN A
Citation
Z. Gyorgydeak et al., -3-ACYLAMINO-5-ARYL-4,5-DIHYDRO-1H-1,2,4-TRIAZOLES - RING-CLOSURE PRODUCTS OF AROMATIC CARBALDEHYDE (DIAMINOMETHYLENE) HYDRAZONES WITH ACYLATING AGENTS, Monatshefte fuer Chemie, 126(6-7), 1995, pp. 733-746
Citations number
48
Categorie Soggetti
Chemistry
Journal title
Monatshefte fuer Chemie → ACNP
ISSN journal
00269247
Volume
126
Issue
6-7
Year of publication
1995
Pages
733 - 746
Database
ISI
SICI code
0026-9247(1995)126:6-7<733:--RP>2.0.ZU;2-G
Abstract
Treatment of aromatic carbaldehyde (diaminomethylene)hydrazones 1 with hot acetic anhydride or benzoyl chloride affords -3-acylamino-5-aryl- 4,5-dihydro-1H-1,2,4-triazoles 2. In contrast, a new type of O,N-aceta l with an 1,2,4-triazole substructure (3) is obtained from 4-pyridine- carbaldehyde (diaminomethylene)hydrazone (1i) by using a similar react ion procedure. The structures of all novel compounds were confirmed by spectroscopic data (H-1 and C-13 NMR, MS, IR); some representative co mpounds were also studied by X-ray analysis.