Process for the preparation of 2-halogenopyridinealdehydes and n

Details Process for the preparation of 2-halogenopyridinealdehydes and n Process for the preparation of 2-halogenopyridinealdehydes and n

1996-11-27

1998-01-13

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546250, 546286, 546287, 546314, C07D21312, C07D21348

Patent

active

057081808

ABSTRACT:
The reaction of cyanoolefins, aminocarbonylolefins or hydroxyiminoolefins with a Vilsmeier reagent leads to 2-halogenopyridines which bear aldehyde groups in the 3 and/or 5 position. These pyridinealdehydes are valuable intermediates for the preparation of pharmaceuticals and crop protection agents.

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