✦ LIBER ✦

Nitrogen bridgehead compounds. Part 85. Synthesis and reactivity of 3,4-dihydro-1H,6H[1,4]oxazino[3,4-b]quinazolin-6-ones

✍ Scribed by István Hermecz; Ildikó Szilágyi; László Orfi; József Kökösi; György Szász

Book ID: 112130782
Publisher: Journal of Heterocyclic Chemistry
Year: 1993
Tongue: English
Weight: 567 KB
Volume: 30
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570300539

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Heterocondensed quinazolones: synthesis

Heterocondensed quinazolones: synthesis and protein-tyrosine kinase inhibitory activity of 3,4-dihydro-1H,6H-[1,4]oxazino-[3,4-b]quinazolin-6-one derivatives

✍ Lászlo Ôrfi; József Kökösi; György Szász; István Kövesdi; Marianna Mák; István T 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 365 KB

1-Benzylidene (2-14) and 1-phenylhydrazono derivatives (15-29) of 3,4-dihydro-1H,6H-[1,4]oxazino[3,4-b]quinazolin-6-one (1) were obtained from the condensation reactions of 1 with a series of aromatic aldehydes and by direct diazonium coupling with aryl-diazonium chlorides. The substances were teste

Nitrogen bridgehead compounds. Part 88.

Nitrogen bridgehead compounds. Part 88. Synthesis of 3H, 7H-[1,4]diazepino[3,4-b]quinazoline-3,7-diones

✍ Mónika Szabó; József Kökösi; László Örfi; Attila Kovács; István Hermecz 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 371 KB

## Abstract 3__H__,7__H__‐[1,4]Diazepino[3,4‐__b__]quinazolone‐3,7‐diones 9, 11 were synthesized starting from 2‐(1‐bromo‐ethyl)quinazolin‐4(3__H__)‐ones 3 and 17 __via__ 2‐[1‐(4‐methoxyphenylamino)ethyl]quinazolin‐4(3__H__)‐ones 4 and 18. Cyclization of 3‐[2‐(1‐bromoethyl)‐4‐oxo‐3,4‐dihydroquinazo

ChemInform Abstract: Nitrogen Bridgehead

ChemInform Abstract: Nitrogen Bridgehead Compounds. Part 88. Synthesis of 3H,7H(1,4) Diazepino(3,4-b)quinazoline-3,7-diones.

✍ M. SZABO; J. KOEKOESI; L. OERFI; A. KOVACS; I. HERMECZ 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 36 KB 👁 1 views

Nitrogen bridgehead compounds. Part 55 S

Nitrogen bridgehead compounds. Part 55 Synthesis of substituted 7,8-dihydro-5H,13H-indolo[2′,3′:3,4]pyrido[2,1-b]quinazolin-5-ones

✍ István Hermecz; Benjaminányi Pod; Zoltán Mészáros; György Szász; József Kökösi 📂 Article 📅 1985 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 148 KB

The conformational equilibria of 4,4a,5,

The conformational equilibria of 4,4a,5,6-tetrahydro-1H,3H-[1,3]oxazino [3,4-a]quinoline, 3,4,11,11a-tetrahydro-1H,6H-[1,3]oxazino[3,4-b]isoquinoline and 1,6,7,11b-tetrahydro-2H,4H-[1,3]oxazino[4,3-a]isoquinoline

✍ T.A. Crabb; R.F. Newton 📂 Article 📅 1971 🏛 Elsevier Science 🌐 French ⚖ 168 KB

The geminal coupling constant C-8.0 Hz) for the N-CH2-0 protons in hexahydro-l&3!-pyrido [1,2-cl[1,3loxazine (1)' when compared with the corresponding n.m.r. parameter in cis-8,12a, -

Simple synthesis of 2-amino-4-(het)aryl-

Simple synthesis of 2-amino-4-(het)aryl-4,6-dihydro-1(3)(11)H-[1,3,5]triazino[2,1-b]quinazolin-6-ones

✍ Anton V. Dolzhenko; Anna V. Dolzhenko; Wai-Keung Chui 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 236 KB

## Abstract magnified image The 2‐amino‐4‐(het)aryl‐4,6‐dihydro‐1(3)(11)__H__‐[1,3,5]triazino[2,1‐__b__]quinazolin‐6‐ones were prepared readily by cyclocondensation of anthranilic acid derived 4‐oxo‐3,4‐dihydroquinazolinyl‐2‐guanidine with a variety of aldehydes. The structures of the compounds we