Lai, John T. et al. published their research in Synthesis in 1982 | CAS: 80636-30-2

3,3-Dimethyl-3,4-dihydroquinoxalin-2(1H)-one (cas: 80636-30-2) belongs to quinoxaline derivatives. Quinoxaline derivatives are important constituents of pharmacologically active compounds, including antibacterial, antibiotic and antineoplastic, antifungal, anti-inflammatory and analgesic drugs. Quinoxaline and its analogues may also be formed by reduction of amino acids substituted 1,5-difluoro-2,4-dinitrobenzene (DFDNB),One study used 2-iodoxybenzoic acid (IBX) as a catalyst in the reaction of benzil with 1,2-diaminobenzene.SDS of cas: 80636-30-2

Hindered amines. Part 4. 3,3-Dialkyl-1,2,3,4-tetrahydro-2-quinoxalinones and cis- and trans-3,3-dialkyldecahydro-2-quinoxalinones was written by Lai, John T.. And the article was included in Synthesis in 1982.SDS of cas: 80636-30-2 This article mentions the following:

Tetrahydroquinoxalinones I [R = H; R1 = Me, R2 = Me, hexyl; R1R2 = (CH2)4, (CH2)5] were obtained by treating o-(H2N)2C6H4 with R1R2CO and CHCl3. I (R = 6-Me, 7-Me, 6-Cl, 7-Cl, R1 = R2 = Me) were obtained from 3,4-(H2N)2C6H3R and Cl3CCMe2OH. Rh-C hydrogenation of I (R = H) gave cis–II. trans–II were obtained from HOCR1R2CN and 1,2-cyclohexanediamine. In the experiment, the researchers used many compounds, for example, 3,3-Dimethyl-3,4-dihydroquinoxalin-2(1H)-one (cas: 80636-30-2SDS of cas: 80636-30-2).

3,3-Dimethyl-3,4-dihydroquinoxalin-2(1H)-one (cas: 80636-30-2) belongs to quinoxaline derivatives. Quinoxaline derivatives are important constituents of pharmacologically active compounds, including antibacterial, antibiotic and antineoplastic, antifungal, anti-inflammatory and analgesic drugs. Quinoxaline and its analogues may also be formed by reduction of amino acids substituted 1,5-difluoro-2,4-dinitrobenzene (DFDNB),One study used 2-iodoxybenzoic acid (IBX) as a catalyst in the reaction of benzil with 1,2-diaminobenzene.SDS of cas: 80636-30-2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider