Process for preparing quinoline carboxylic acid boric acid anhydride

Process for preparing quinoline carboxylic acid boric acid anhydride

  • CN 1,031,710 C
  • Filed: 04/07/1988
  • Issued: 05/01/1996
  • Est. Priority Date: 04/08/1987
  • Status: Active Grant
First Claim
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1. the method for preparing compound of Formula I, R represents cyclopropyl, general formula-CH in the formula 2CR 5R 6R 7, R wherein 5, R 6, R 7Represent hydrogen or halogen, condition is R 5, R 6, R 7Can not be hydrogen simultaneously, or the phenyl that replaces by 1-2 halogen atoms, R 1, R 2Representative contains the acyloxy of 2-6 carbon atoms, R 3Represent chlorine or fluorine, R 4Represent this method of hydrogen or fluorine to comprise:

  • the compound that makes general formula I I R, R in the formula 3, R 4Definition is with above-mentioned, R 8Represent hydrogen or contain the alkyl of 1-4 carbon atoms, with the three acyloxy boron derivatives of general formula V B (OCOR 9) 3(V) R in the formula 9Representative contains 1-5 carbon atoms and can or contain the aryl of 6-10 carbon atoms by halogenated alkyl, reacts.

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