Method for preparing lactam
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United States of America Patent
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Feb 26, 2002
Grant Date -
N/A
app pub date -
Nov 22, 2000
filing date -
Apr 14, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is related to a method for preparing lactam represented by the following formula: ##STR1## wherein R is C.sub.2-10 alkylene which may be optionally substituted with C.sub.1-6 alkyl or phenyl; R' is a hydrogen atom, C.sub.1-6 alkyl, C.sub.1-6 hydroxyalkyl or phenyl. The method for preparing lactam comprises an amination reaction using crystalline aluminosilicate zeolites as catalysts under the condition of gas phase in the presence of (a) lactone, (b) amine and/or ammonia and (c) water.
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