Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1994-12-22
1996-06-11
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D31762
Patent
active
055257399
ABSTRACT:
According to the invention, a new process has been found for the preparation of 2,2-difluoro-benzo[1,3]-dioxole-cabaldehydes of the formula (I) ##STR1## in which benzo[1,3]dioxole-carbaldehydes are chlorinated, the 2,2-dichloro-dichloromethylbenzo[1,3]dioxoles formed, which are likewise new, are partly fluorinated to give the 2,2-difluoro-dichloromethyl-benzo[1,3]dioxoles, which are likewise new, and these are then reacted with urotropin to give the desired compounds.
REFERENCES:
patent: 4886816 (1989-12-01), Franckowiak et al.
Andres Peter
Marhold Albrecht
Bayer Aktiengesellschaft
Chan Nicky
Gerstenzang William C.
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