Process for the preparation of (pyrimidin-2-yl) methyl ketones

Details Process for the preparation of (pyrimidin-2-yl) methyl ketones Process for the preparation of (pyrimidin-2-yl) methyl ketones

2006-12-05

2006-12-05

Rao, Deepak (Department: 1624)

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

Organic compounds

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

Reexamination Certificate

active

07145007

ABSTRACT:
A process for the preparation, of (pyrimidin-2-yl)methyl ketones of the general formula (I),in which R1is in each case a C1-10-alkyl group, a C3-8-cycloalkyl group, an allyl group or an aryl-C1-4-alkyl group, and R2is a C1-10-alkyl group or aryl group. For this, a malondiimidate of the general formula (II),in which R1has the meaning given above, is reacted with a β-keto ester of the general formula (III),in which R2has the meaning given above, and R3is a C1-10-alkyl group. The compounds which can be prepared according to the invention are intermediates for the synthesis of agrochemical active ingredients.

REFERENCES:
patent: 5276152 (1994-01-01), Escher et al.
Eilingsfeld, H., et al., Chemische Berichte, vol. 101, (1968), pp. 2426-2434.

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