Process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles

Details Process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles Process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles

2006-12-12

2006-12-12

Owens, Amelia A. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07148365

ABSTRACT:
The invention relates to a process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles and to the use thereof for preparing medicaments and crop protection agents.

REFERENCES:
patent: 4895871 (1990-01-01), Lutomski et al.
patent: 5194628 (1993-03-01), Ackermann et al.
patent: 5281718 (1994-01-01), Ackermann et al.
patent: 5312800 (1994-05-01), Rempfler
patent: 5420301 (1995-05-01), Ackermann et al.
Cherry, G. et al: “Elecrophilic bromination of phenol ethers in superacid solution using alkali bromide” TETRAHEDRON LETTERS, Bd. 31, Nr. 14, 1990, Seiten 2007-2010, XP002344442 “Seite 2008”.

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