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4-Piperidone — A Synthon for Spiro-Heterocycles.

✍ Scribed by V. Padmavathi; T. V. Ramana Reddy; K. Audisesha Reddy


Publisher
John Wiley and Sons
Year
2007
Weight
30 KB
Volume
38
Category
Article
ISSN
0931-7597

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2,6-Diaryl-4,4-disubstituted 1,4-dihydro
✍ V. Padmavathi; A. Balaiah; T. V. Ramana Reddy; B. Jagan Mohan Reddy; D. Bhaskar 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 86 KB

## 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