Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1986-08-08
1987-11-24
Milestone, Norma S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
560130, 560184, 560226, C07D30340
Patent
active
047090634
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.
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Nelson Richard V.
Stephen John F.
ICI Americas Inc.
Jones John Wilson
Milestone Norma S.
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