Patent · US Active

Process for the preparation of 5-substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines

US8143395B2 · kind B2 · utility

2Cited by
3References
2Claims
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Key dates

Filing dateMay 24, 2011
Grant dateMar 27, 2012
Priority date—
Expiry dateMay 24, 2031

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D487/04
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.