Process for the preparation of aliphatic or cycloaliphatic chlorides
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Jun 18, 1998
filing date -
Jul 16, 1997
priority date (Note) -
Expired
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Abstract
The process according to the invention consists in preparing chlorides of aliphatic or cycloaliphatic hydrocarbons by reacting the corresponding mono- or polyalcohol with phosgene or thionyl chloride in the presence of at least one catalyst chosen from hexasubstituted guanidinium halides and their hydrohalides, optionally grafted via one of their radicals to a silica-based support. The chlorides are quickly obtained with good yields and contain few by-products such as carbonates or chloroformates.
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