Kalugin, V. E. published the artcileSynthesis of substituted 5-aminobenzothieno[3,2-c]isoquinolines and their sulfinyl and sulfonyl derivatives, Category: nitriles-buliding-blocks, the publication is Russian Chemical Bulletin (2015), 64(4), 878-882, database is CAplus.
A method for the preparation of substituted 5-aminobenzothieno[3,2-c]isoquinolines I, (R = H, Me, Cl), in good yields by the condensation of substituted 2-mercaptobenzonitriles with 2-(chloromethyl)benzonitrile and a subsequent treatment of the condensation products with potassium tert-butoxide was suggested. The oxidation of the condensation products to sulfoxides or sulfones and a subsequent treatment of these compounds with potassium tert-butoxide led to the preparation of substituted 5-aminobenzothieno[3,2-c]isoquinoline 11-oxides or 5-aminobenzothieno[3,2-c]isoquinoline 11,11-dioxides in good yields.
Russian Chemical Bulletin 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 C8H6ClN, Category: nitriles-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts