Chlorination of .beta.-methylpyridine compounds
First Claim
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1. A method for preparing a chlorinated β
- -methylpyridine compound of the formula;
##STR4## wherein n is 1, 2, 3 or 4, andY is CH3, CH2 Cl, CHCl2 or CCl3which comprises contacting phosphorous pentachloride, in the presence of phenylphosphonic dichloride (C6 H5 POCl2) with a β
-methylpyridine compound of the formula ##STR5## wherein m is 0, 1, 2, 3 or 4;
p is 0, 1, 2, 3 or 4;
m+p=1, 2, 3 or 4; and
recovering said chlorinated β
-methylpyridine compound.
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Abstract
A method is disclosed for preparing a chlorinated β-methylpyridine by chlorinating a β-methylpyridine compound with PCl5 in the presence of phenylphosphonic dichloride.
7 Citations
6 Claims
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1. A method for preparing a chlorinated β
- -methylpyridine compound of the formula;
##STR4## wherein n is 1, 2, 3 or 4, andY is CH3, CH2 Cl, CHCl2 or CCl3 which comprises contacting phosphorous pentachloride, in the presence of phenylphosphonic dichloride (C6 H5 POCl2) with a β
-methylpyridine compound of the formula ##STR5## wherein m is 0, 1, 2, 3 or 4;p is 0, 1, 2, 3 or 4; m+p=1, 2, 3 or 4; and
recovering said chlorinated β
-methylpyridine compound. - View Dependent Claims (2, 3, 4, 5, 6)
- -methylpyridine compound of the formula;
Specification
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Current AssigneeThe Dow Chemical Company (Dow, Inc.)
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Original AssigneeThe Dow Chemical Company (Dow, Inc.)
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InventorsDietsche, Thomas J., Gray, Trevor E., Grant, Charles B.
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Primary Examiner(s)Rotman, Alan L.
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Assistant Examiner(s)WHITTENBAUGH, ROBERT
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Application NumberUS06/808,779Time in Patent Office543 DaysField of Search546/345US Class Current546/345CPC Class CodesC07D 213/61 Halogen atoms or nitro radi...
