An oxyphosphate of formula BiCa4(PO4)3O was prepared and characterized by powder XRD, Fourier transform infrared spectroscopy (FTIR), and SEM-EDAX techniques. The catalytic activity of the synthesized compound was explored in the preparation of 3,4-dihydropyrimidin-2(1H)-one using Biginelli reaction. Influence of parameters such as temperature and solvent on this reaction using this heterogeneous catalyst was studied. A higher yield of 98% of the 3,4-dihydropyrimidin-2(1H)-one was achieved within 120 min of duration at room temperature in the presence of acetic acid (AcOH). © 2017 Taylor &amp; Francis Group, LLC.

Sumathi S

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Buvaneswari G

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Room temperature synthesis of 3,4-dihydropyrimidin-2(1H)-one using apatite like oxyphosphate

Inorganic and Nano-Metal Chemistry

Mono, di and trivalent ions containing hydroxyapatite of the formula BiNaCa 3(PO 4) 3OH has been synthesized and the compound's catalytic activity in three component Biginelli condensation was studied. The compound was characterized by powder XRD, FT-IR, SEM and TGA/DTA techniques. The unit cell dimensions of the compound were determined to be a = 9.412(2) , C = 6.92(2) and the unit cell volume is 530.9 3. The substituted hydroxyapatite phase showed enhanced reactivity in the one pot synthesis of 3,4-dihydropyrimidin-2(1H)-one by Biginelli reaction and resulted in an increased yield of the product. © 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

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Current Organic Chemistry

Doped Keggin Heteropolyacids as Catalyst in the Solvent-free, Multicomponent Synthesis of Substituted 3,4-dihydropyrimidin-2-(1H)-ones

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Journal	Inorganic and Nano-Metal Chemistry
Publisher	Informa UK Limited
ISSN	2470-1556
Open Access	0