Process for preparing 1,1'-dialkyl-4,4'-bipyridylium dihalide

Details Process for preparing 1,1'-dialkyl-4,4'-bipyridylium dihalide Process for preparing 1,1'-dialkyl-4,4'-bipyridylium dihalide

1978-10-10

1980-09-16

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21322

Patent

active

042231507

ABSTRACT:
1,1' dialkyl -4,4'-bipyridylium dihalide is prepared by heating 4,4'-bipyridyl with an .alpha.-halogen substituted organic acid of formula X R.sub.1 COOH where X is Cl or Br, R is C.sub.1-3, preferably monochloroacetic acid alkyl group in the presence of water until the pH is below 4.0.

REFERENCES:
patent: 3530141 (1970-09-01), Downes et al.

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