Nasielski, J.; Rypens, C. published the artcile< 6-Nitro-2,3-dipiperidinoquinoxaline: its unexpected formation from 2-chloro-7-nitroquinoxaline>, SDS of cas: 89898-96-4, the main research area is chloronitroquinoxaline substitution piperidine; nitrodipiperidinoquinoxaline.
Excess piperidine and 2-chloro-7-nitroquinoxaline I (R=Cl, R1=H) in di-Et ether give large amounts of the unexpected disubstitution product 6-nitro-2,3-dipiperidinoquinoxaline I (R=R1=piperidino). The mechanism of this very unusual nucleophilic substitution of hydrogen is suggested to involve the oxidation of the dipiperidinodihydroquinoxaline II ( R = piperidino) by dissolved oxygen.
Tetrahedron Letters published new progress about Substitution reaction. 89898-96-4 belongs to class quinoxaline, and the molecular formula is C8H5N3O3, SDS of cas: 89898-96-4.
Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider