Xie, Yan published the artcileSynthesis of 2-(2-Aryl)ethylbenzoic acid, Computed Properties of 612-13-5, the publication is Zhongguo Yiyao Gongye Zazhi (2012), 43(2), 87-89, database is CAplus.
2-(2-Phenylethyl)benzoic acid or 2-(thiophene-2-ylethyl)benzoic acid was synthesized from o-cyanobenzyl chloride via Wittig-Horner reaction with benzaldehyde or 2-thiopene carboxaldehyde, hydrolysis and then hydrogenation, with the overall yield of about 64% or 60%.
Zhongguo Yiyao Gongye Zazhi published new progress about 612-13-5. 612-13-5 belongs to nitriles-buliding-blocks, auxiliary class Organic Pigment, name is 2-(Chloromethyl)benzonitrile, and the molecular formula is C3H7NO2, Computed Properties of 612-13-5.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts