Preparation of indoles by cyclization
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United States of America Patent
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Apr 10, 1990
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N/A
app pub date -
Nov 14, 1988
filing date -
Jul 8, 1982
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Abstract
Disclosed herein is a preparation process for an indole, which process comprises subjecting an N-(.beta.-hydroxy)-alkylaniline, in the presence of a catalyst and at a super-atmospheric pressure, to a gas-phase catalytic reaction. The present process improves the selectivity of the reaction and the service life of the catalyst.
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