Substituted dihydropyrimidinone preparation using...

Details Substituted dihydropyrimidinone preparation using... Substituted dihydropyrimidinone preparation using...

2007-06-19

2007-06-19

Rao, Deepak (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

C544S318000

Reexamination Certificate

active

10810343

ABSTRACT:
The present invention provides a process for the preparation of substituted dihydropyrimidinones using polyaniline salts as reusable catalysts, which comprises reacting an aldehyde, a β-keto ester and urea/thiourea in the presence of a polyaniline salt catalyst and separating the substituted dihydropyrimidinone obtained.

REFERENCES:
Peter Wipf and April Cunningham, “A solid phase protocol of the biginelli dihydropyrimidine synthesis suitable for combinatorial chemistry”, Tetrahedron Letters, vol. 36, No. 43, pp. 7819-7822, 1995.

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