| 摘要 |
PROBLEM TO BE SOLVED: To provide a new axially asymmetric compound that can be used as an agent for introducing an asymmetric auxiliary group. SOLUTION: This invention is an optically active sulfonic acid compound represented by formula (1) [wherein R<SP>1</SP>is a 1-4C alkoxy, a 1-4C perfluoroalkoxy or a group represented by formula (2); R<SP>2</SP>is hydroxy, bromine atom, a 1-4C alkoxy, amino or a monosubstituted amino; R<SP>3</SP>is hydrogen atom or the like; R<SP>4</SP>is hydrogen atom or the like; R<SP>5</SP>is identical to R<SP>4</SP>or hydrogen atom]. COPYRIGHT: (C)2005,JPO&NCIPI |
