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2,6-Diaryl-4,4-disubstituted 1,4-dihydropyridines: Source for spiro heterocycles

✍ Scribed by V. Padmavathi; A. Balaiah; T. V. Ramana Reddy; B. Jagan Mohan Reddy; D. Bhaskar Reddy

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
86 KB
Volume
14
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

Novel spiro heterocycles (5–12) were obtained by the cyclocondensation of 2,6‐diaryl‐4,4‐dimethoxycarbonyl‐/4‐cyano‐4‐ethoxycarbonyl‐1,4‐dihydropyridines(3/4) with hydrazine hydrate, hydroxylamine hydrochloride, urea, and thiourea. All the compounds were characterized by IR, ^1^H NMR, and ^13^C NMR spectral data.© 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:513–517, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10183

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✍ Santhanaraman Manikandan; Muthian Shanmugasundaram; Raghavachary Raghunathan 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 127 KB

## Abstract Synthesis of a series of novel spiro[3,4‐diaryl‐4,5‐dihydroisoxazole‐5,2′‐1′,2′,3′,4′‐tetrahydro‐1′‐naphthalenone] has been described by the regioselective cycloaddition of nitrile oxides with 2‐arylmethylene‐1,2,3,4‐tetrahydro‐1‐naphthalenone. © 2001 John Wiley & Sons, Inc. Heteroatom