Patent · US Expired

Process for the preparation of 1H-azole derivatives

US4259505A · kind A · utility

7Cited by

1References

14Claims

0Family size

Assignee

Ciba-Geigy · US

Inventors

Elmar Sturm · Aesch, CH
Wolfgang Eckhardt · Lörrach, DE
Bernhard Gloor · Pratteln, CH
Robert Nyfeler · Basel, CH

Key dates

Filing date	Mar 4, 1980
Grant date	Mar 31, 1981
Priority date	—
Expiry date	Mar 4, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D249/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

An improved process for the preparation of 2-tert.-butyl-2-[1-phenoxy-1-(1H-azol-1-yl)]-methyl-ketales is disclosed, which process comprises reacting a 2-tert.-butyl-2-[1-phenoxy-1-halo]-methyl-ketale with a quaternary ammonium or phosphonium salt of an azole. The azoles used are 1H-1,2,4-triazole or 1H-imidazole.

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