IP Library › Granted Patent US 8,143,395
Granted Patent B2
US 8,143,395 · App. 13/114,087 · Granted Mar 27, 2012

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

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Quick Facts
Patent No.
US 8,143,395
App. No.
13/114,087
Granted
Mar 27, 2012
Kind
B2
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.

Claims (8)

1. A compound of the formula

in which

X represents halogen or OR; and

R represents C 1 -C 4 alkyl.

2. A compound of the formula

in which

X represents halogen or OR; and

R represents C 1 -C 4 alkyl.

Assignments (2)
CHANGE OF NAME Recorded Nov 8, 2021
From: DOW AGROSCIENCES LLC
To: CORTEVA AGRISCIENCE LLC
Reel/Frame 058044/0184 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 30, 2012
From: BOTT, CRAIG; HAMILTON, CHRISTOPER T.; ROTH, GARY A.
To: DOW AGROSCIENCES LLC
Reel/Frame 027614/0327 →