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Title:
PRODUCTION OF HALOGENATED ALKYLCYCLOALKANE
Document Type and Number:
Japanese Patent JP2000256231
Kind Code:
A
Abstract:

To obtain the subject compound useful as a raw material for agrochemicals and pharmaceuticals in high yield by halogenizing a specific cycloalkylalkanol with a hydrohalogenic acid in the presence of a dehydrating agent.

This halogenated cycloalkylalkane is obtained by halogenating (A) a 4-14C cycloalkylalkanol (e.g. cyclopropanemethanol, cyclobutanemethanol, etc.), with (C) a hydrohalogenic acid (e.g. hydrochloric acid, hydroiodic acid, etc.), in the presence of (B) a dehydrating agent (e.g. anhydrous magnesium sulfate, anhydrous calcium chloride, calcium chloride dihydrate, etc.), preferably at 0-40°C for 1.5-5 hours. In the above mentioned reaction, 1.5-3 mole of the ingredient C is preferably used to 1 mole of the ingredient A. The amount of the ingredient B to be used is, e.g. when anhydrous magnesium sulfate and 57% hydroiodic acid as the hydrohalogenic acid are used, preferably ≥0.8 mole to 1 mole of hydrogen iodide in the aforesaid hydroiodic acid.


Inventors:
KUROKI TAKASHI
SEKIZAWA SATOSHI
KASAHARA ISAMU
Application Number:
JP6820399A
Publication Date:
September 19, 2000
Filing Date:
March 15, 1999
Export Citation:
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Assignee:
NIPPON SODA CO
International Classes:
C07C17/16; C07C22/00; (IPC1-7): C07C17/16; C07C22/00
Attorney, Agent or Firm:
東海 裕作