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Synthesis and properties of 4,5-dihydrobenzo[e]imidazo[2,1-c][1,4,2]diazaphosphinine derivatives

✍ Scribed by Vladimir V. Ivanov; Alexandr A. Yurchenko; Alexander N. Chernega; Alexandr M. Pinchuk; Andrej A. Tolmachev

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
188 KB
Volume
13
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

A number of 4,5‐dihydrobenzo[e]imidazo[2,1‐c][1,4,2]diazaphosphinine derivatives were prepared by the direct phosphorylation of 1‐(4‐Chlorophenylcarboxamido)‐2‐(1H‐1‐imidazolyl)‐5‐trifluoromethylbenzene in basic medium with phosphorus(III) bromide and dibromophenylphosphine. The tricyclic compounds 6a, 6b, and 9 having a trivalent phosphorus atom undergo the diazaphosphinine ring opening upon treatment with secondary amines in the presence of sulfur. © 2002 John Wiley & Sons, Inc. Heteroatom Chem 13:84–92, 2002; DOI 10.1002/hc.10000

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✍ Satoru Iwata; Kiyoshi Tanaka 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 190 KB

## Abstract The peak potentials (Ep) of 3‐substituted pyrido[1′,2′:1,2]imidazo[4,5‐__b__]pyrazine and pyrido[1′,2′:1,2]‐imidazo[4,5‐__b__]quinoxaline derivatives are sufficiently correlated with Hammett substituent constant ∼~m~ and with the PM3 calculated LUMO energy levels, and the linear relatio