Charge localization in the retro-Diels-Alder fragmentation of tetralins was written by Lightner, David A.;Steinberg, Frank S.. And the article was included in Organic Mass Spectrometry in 1970.SDS of cas: 29809-13-0 This article mentions the following:
The electron-impact induced retro-Diels-Alder reaction of 5- and 6-substituted tetralins has been examined Most electron-donating groups at C-5 retard the fragmentation relative to tetralin; whereas, electron-withdrawing groups slightly increase the fragmentation. In the experiment, the researchers used many compounds, for example, 5,6,7,8-Tetrahydronaphthalene-1-carbonitrile (cas: 29809-13-0SDS of cas: 29809-13-0).
5,6,7,8-Tetrahydronaphthalene-1-carbonitrile (cas: 29809-13-0) belongs to nitriles. Nitrile compounds can be prepared by the incorporation of a cyanide source through C–C bond formation or by dehydration of primary carboxamides. Some nitriles are manufactured by heating carboxylic acids with ammonia in the presence of catalysts. This process is used to make nitriles from natural fats and oils, the products being used as softening agents in synthetic rubbers, plastics, and textiles and for making amines.SDS of cas: 29809-13-0
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts