Biaryl-type compounds, CD color fixing agent and method for determination of absolute configuration

An achiral biaryl-type compound in which the biaryl-type compound is at least one compound selected from the group consisting of a biphenyl dicarboxylic acid derivative represented by the following general formula (I):

• 40
• (wherein R is H, Me-, Et-, i-Pt-, n-Bu-, i-Bu- or t-Bu- and X is H, Me-, Me2N—, MeO—, NO2—, NH2—, CN—, Cl or Br, and Y is OH—, CN—,
• 41
• provided that X is Me2N— or CN— when R═H and Y═OH, X is Me-, Me2N—, NO2—, NH2— or CN— when R=Me and Y═OH, and X is Me-, Me2N—, MeO—, NO2—, NH2— or CN— when R=Et and Y═OH, and R is t-Bu- when X═H and Y═OH), 2,2′-binaphthyl dicarboxylic acid derivative represented by the following general formula (II):
• 42
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH—, CN—,
• 43
• provided that R is i-Pr-, n-Bu-,.i-Bu- or t-Bu- when Y═OH), 2,2′-biquinoline dicarboxylic acid and derivatives thereof represented by the following general formula (III):
• 44
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH—, CN—,
• 45
• and may contain a compound formed by cyclizing —CO2R with —COY to form
• 46
• ), 7,7′-biquinoline dicarboxylic acid and derivatives thereof represented by the following general formula (IV):
• 47
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH—, CN—,
• 48
• and may contain a compound formed by cyclizing —CO2R with —COY to form
• 49
• ), 2,2′-bianthracene dicarboxylic acid and derivatives thereof represented by the following general formula (V):
• 50
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH—, CN—,
• 51
• and may contain a compound formed by cyclizing —CO2R with —COY to form
• 52
• ), 2,2′-bibenzo(g)quinoline dicarboxylic acid and derivatives thereof represented by the following general formula (VI):
• 53
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH—, CN—,
• 54
• and may contain a compound formed by cyclizing —CO2R with —COY to form
• 55
• ), and 3,3′-biacridine dicarboxylic acid and derivatives thereof represented by the following general formula (VII):
• 56
• (wherein R is H, Me-, Et-, i-Pr-, n-Bu-, i-Bu- or t-Bu- and Y is OH, CN,
• 57
• and may contain a compound formed by cyclizing —CO2R with —COY to form
• 58
• ).