Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1993-06-07
1994-07-12
Rotman, Alan L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546345, C07D21326, C07D21361
Patent
active
053290119
ABSTRACT:
A process for the preparation of a 2-chloro-5-chloro-methyl-pyridine, of the formula (I) ##STR1## comprising reacting a 2-alkoxy-5-alkoxymethylpyridine derivative of the formula (II) ##STR2## in which R.sup.1 represents alkyl, with a chlorinating agent, if appropriate, in the presence of a diluent and if appropriate, in the presence of a reaction auxiliary, at a temperature between 0.degree.C. and 200.degree.C.
REFERENCES:
patent: 4576629 (1986-03-01), Morland et al.
T. R. Kasturi, et al., "A Novel . . . Conditions", Communications, pp. 743-746.
J. W. Tilley, et al., "Synthesis of Heterocyclic Analogs of Alpha-Methyldopa", J. Heterocyclic Chem., 16,333 (1979).
Synthesis of Heterocyclic Analogs of .alpha.-Methyldopa, J. W. Tilley et al, J. Heterocyclic Chem., 16, 333 (1979).
A Novel Transformation of 3-Alkoxyisoquinolines to 3-Chloroisoquinolines and an Unusual Decyanation of 1,3-Dialkoxy-4-Cyano-5,6,7,8-Tetrahydroisoquinolines Under Vilsmeier-Haack Conditions, T. R. Kasturi et al, Synthesis, 1984, 743-745.
Bayer Aktiengesellschaft
Rotman Alan L.
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