Binaphthyl compounds and thermoplastic resins

A compound of the formula (I)

• where
• X1 and X2 are independently selected from —CH2OH and —C(O)ORx, where R* is selected from the group consisting of hydrogen, phenyl, benzyl and C1-C4-alkyl;
• A1 and A2 are independently selected from the group consisting of a mono- or polycyclic arylene having from 6 to 26 carbon atoms as ring members and a mono- or polycyclic hetarylene having a total of 5 to 26 atoms, which are ring members, where 1, 2, 3 or 4 of these ring member atoms of hetarylene are selected from nitrogen, sulfur and oxygen, while the remainder of these ring member atoms of hetarylene are carbon atoms, where mono- or polycyclic arylene and mono- or polycyclic hetarylene are unsubstituted or carry 1, 2, 3 or 4 radicals RAr;
• R1 and R2 are independently selected from the group consisting of halogen, C2-C3-alkynyl, CN, R, OR, CHsR′3-s, NR2, C(O)R and CH═CHR″, it being possible that R1 and R2 are identical or different if p+q>1, where s on each occurrence is 0, 1 or 2;
• p and q are independently 0, 1 or 2;
• RAr is selected from the group consisting of R, OR, CHtR′3-t, NR2 and CH═CHR″, where RAr may be identical or different if more than one is present on the same (het)aryl or (het)arylene group, where t on each occurrence is 0, 1 or 2;
• R is selected from the group consisting of C1-C4-alkyl, phenyl, naphthyl, phenanthrenyl and triphenylenyl, where phenyl, naphthyl, phenanthrenyl and triphenylenyl are unsubstituted or substituted by 1, 2, 3 or 4 identical or different radicals R′″;
• R′ is selected from the group consisting of phenyl, naphthyl, phenanthrenyl and triphenylenyl, where phenyl, naphthyl, phenanthrenyl and triphenylenyl are unsubstituted or substituted by 1, 2, 3 or 4 identical or different radicals R′″;
• R″ is selected from hydrogen, methyl, phenyl and naphthyl, where phenyl and naphthyl are unsubstituted or substituted by 1, 2, 3 or 4 identical or different radicals R′″;
• R′″ is selected from the group consisting of phenyl, halogen, OCH3, CH3, N(CH3)2 and C(O)CH3;
• except for compounds of formula (I), where A1 and A2 are both unsubstituted phenylene, p and q are both 0, and X1 and X2 are both —CH2OH or —C(O)ORx, where Rx is hydrogen, methyl or ethyl.