Process for producing(2-nitrophenyl)acetonitrile derivative and intermediate therefor
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United States of America Patent
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Issued Date -
Oct 7, 2004
app pub date -
Mar 25, 2004
filing date -
Sep 28, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention lies in a process for producing a compound represented by the following formula [IV], which comprises the following steps (1) to (3), as well as in an intermediate therefor. (1) A step which comprises reacting a compound represented by the following formula [I] with a compound represented by the following formula [VI] or with a mixture of a compound represented by the following formula [VII] and a compound represented by the following formula [VIII] to obtain a compound represented by the following formula [IX], and hydrolyzing the compound represented by the formula [IX] under acidic conditions to obtain a compound represented by the following formula [II]. (2) A step which comprises reacting the compound represented by the formula [II] with hydroxylamine to obtain a compound represented by the following formula [III]. (3) A step which comprises dehydrating the compound represented by the formula [III] to obtain a compound represented by the formula [IV]. 1 (R.sub.1)(R.sub.2)N--CH(OR.sub.3)(OR.sub.4) [VI] (CH.sub.3).sub.2N--CH(OCH.sub.3).sub.2 [VII] (R.sub.1)(R.sub.2)NH [VIII] 2
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