The author of 《Indium(III)chloride catalyzed synthesis of novel 1H-pyrazolo[1,2-b]phthalazine-5,10-diones and 1H-pyrazolo[1,2-a]pyridazine-5,8-diones under solvent-free condition》 were Jadhav, Amol Maruti; Balwe, Sandip Gangadhar; Kim, Jong Su; Lim, Kwon Taek; Jeong, Yeon Tae. And the article was published in Tetrahedron Letters in 2019. Name: 3-Oxo-3-phenylpropanenitrile The author mentioned the following in the article:
An efficient, inexpensive and environmentally friendly synthesis of novel 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-b]phthalazine-5,10-dione and 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-a]pyridazine-5,8-dione derivatives were developed via one-pot three-component reaction of phthalhydrazide or maleic hydrazide, aryl aldehydes and substituted benzoylacetonitriles in the presence of catalytic amount of InCl3 as a Lewis acid catalyst under solvent-free conditions. A mild reaction conditions, short reaction times, high yields and a wide range of functional group tolerance were the most important features of this protocol. The experimental process involved the reaction of 3-Oxo-3-phenylpropanenitrile(cas: 614-16-4Name: 3-Oxo-3-phenylpropanenitrile)
3-Oxo-3-phenylpropanenitrile(cas: 614-16-4) has been used in the synthesis of substituted naphtho[1,8-bc]pyrans. It was also used as building block in the preparation of 4H-pyrans, 2-pyridones, furans and carbocyclics.Name: 3-Oxo-3-phenylpropanenitrile
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts