| 摘要 |
To produce a carboxylic acid R<1>-COOH, in which R<1> is a tertiary branched alkyl residue or a cylcoalkyl residue with one or more rings, which may be attached, and possibly substituted by at least one alkyl residue, the alpha carbon atom of the carbonyl group being a tertiary carbon atom, a branched or cyclic alkane R<1>H, in which R<1> is a branched alkyl residue or a cycloalkyl residue with one or more rings, which may be attached, and possibly substituted by at least one alkyl residue, the alpha carbon atom of the hydrogen atom being a tertiary carbon atom or a secondary carbon atom capable of being rearranged during reaction to a tertiary atom, is reacted in the presence of an acid catalyst with a formiate H(CO)O(CR<2>R<3>R<4>), in which R<2>, R<3> and R<4> denote hydrogen or alkyl, under the three following conditions: that R<2>, R<3> and R<4> are not simultaneously hydrogen; that the formiate yields, in the reaction medium, directly or following a rearrangement, a stable R<2>R<3>R<4>C<+> cation; and that the alkane R<2>R<3>R<4>CH formed can be easily eliminated from the reaction medium. |
