Preparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene

Details Preparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene Preparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene

1984-12-20

1986-12-09

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546345, 546219, 549561, C07D21361

Patent

active

046280960

ABSTRACT:
A method of preparing certain 2-halo-5-methylpyridines, useful as herbicide intermediates, is presented starting from acyclic pentenes. The pentene is difunctionalized, e.g., by making the epoxide, and is then reacted with a nitrogen source to close the ring. The nitrogen-containing 6-membered heterocycle may then be aromatized readily to produce the 2-halo-5-methylpyridine desired. Also part of the invention are novel acyclic and cyclic intermediates used in the process.

REFERENCES:
patent: 4584380 (1986-04-01), Hartmann et al.

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