Das, Suven published the artcileFacile synthesis of 3-(diarylmethylene)isobenzofuranones, 4-(diarylmethyl)-1(2H)-phthalazinones, and diarylmethanes, Safety of Bis(4-fluorophenyl)methane, the publication is Journal of Chemical Research (2006), 84-86, database is CAplus.
Reflux of 2,2-diaryl-1,3-indandiones in ethyleneglycol with a catalytic amount of triethylamine affords 3-(diarylmethylene)isobenzofuranones in very good yields. The latter produces 4-diarymethyl-1(2H)-phthalazinones under reflux in hydrazine hydrate (99%), and diarylmethanes upon stirring in ethylenediamine. The formation of 3-(diarylmethylene)isobenzofuranones was established on the basis of spectroscopic data and confirmed by x-ray diffraction studies on single crystal of 3-(di-(p-iodophenyl)methylene)isobenzofuranone [orthorhombic, Pna21, a 14.996(1), b 13.667(1), c 9.254(1) ?, V 1896.6(3) ?3, Z 4].
Journal of Chemical Research published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, Safety of Bis(4-fluorophenyl)methane.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia