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Synthesis of substituted 1-benzyl-2,4,6-triphenyl-2,3-dihydro-pyrazolo [3,4-b] [1,4]diazepines

โœ Scribed by Braulio Insuasty; Ricaurte Rodriguez; Jairo Quiroga; Roberto Martinez; Enrique Angeles


Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
210 KB
Volume
34
Category
Article
ISSN
0022-152X

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โœฆ Synopsis


Abstract

The acid catalyzed condensation of 4,5โ€diaminopyrazoles and chalcones gave the hitherto unknown 1โ€benzylโ€2,4,6โ€triphenylโ€2,3โ€dihydropyrazolo[3,4โ€b][1,4]diazepines derivatives. The structure of all products was supported by ir, ^1^H and ^13^Cโ€nmr and mass spectra.


๐Ÿ“œ SIMILAR VOLUMES


A new entry to pyrazolo[4,3-e][1,4]diaze
โœ Nalla Ram Reddy; Ghanta Mahesh Reddy; Padi Pratap Reddy ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 74 KB ๐Ÿ‘ 1 views

A facile approach to pyrazolo [4,3-e][1,4] diazepin-5,8-diones andpyrazolo[4,3-e]pyrrolo[1,2-a][1,4]diazepin-5,10-diones is reported. Strategy involved the utility of ฮฑ-amino acid as a three-atom segment in the construction of diazepine skeleton on the preformed pyrazole ring.

First synthesis of 5,6-dihydro-4H-furo[3
โœ Xiao Feng; Jean-Charles Lancelot; Alain-Claude Gillard; Henriette Landelle; Sylv ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 310 KB ๐Ÿ‘ 1 views

## Abstract The synthetic pathway leading to 5,6โ€dihydroโ€4__H__โ€furo[3,2โ€__f__]pyrrolo[1,2โ€__a__][1,4]diazepines is described in four steps starting from ฮฑโ€bromophenones __via__ 2โ€aminoโ€3โ€furonitriles.