专利名称:ALPHA HYDROXY DIALKYL ACETALS发明人:GENICHI TSUCHIHASHI,SHUICHI
MITAMURA,KOUJI KITAJIMA
申请号:AU4588985申请日:19850807公开号:AU4588985A公开日:19860102
摘要:A process for preparing an alpha-aromatic group substituted alkanoic acid or itsester of the general formula wherein Ar represents an aromatic group and R<1>represents a hydrogen atom or a saturated aliphatic group, or Ar and R<1> may form acondensed ring together with the carbon atom to which they are bonded; and R<2>represents a hydrogen atom, an alkyl group, or a hydroxyalkyl group, characterized inthat an alpha-sulfonyloxyketone acetal of the general formula wherein R<3> and R<4>,independently from each other, represent an alkyl group. or taken together, representan alkylene group; R<6> represents a substituted or unsubstituted alkyl group or anaromatic group; and Ar and R<1> are as defined above, is hydrolyred, or treated with anagent having affinity for oxygen; and novel intermediate compounds of the generalformula (II) used in aforesaid process.
申请人:SYNTEX PHARMACEUTICALS INTERNATIONAL LTD.
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