SDS of cas: 1116-98-9. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: tert-Butyl 2-cyanoacetate, is researched, Molecular C7H11NO2, CAS is 1116-98-9, about Synthesis of pyrazolo[1,5-a]pyrazin-4-ylacetonitriles and their annulation with pyridine ring.
A reaction of 4-chloropyrazolo[1,5-a]pyrazines with tert-Bu cyanoacetate proceeded via the formation of tert-Bu cyano(pyrazolo- [1,5-a]pyrazin-4(5H)-ylidene)ethanoates as intermediates and led to pyrazolo[1,5-a]pyrazin-4-ylacetonitriles, which were used to obtain derivatives of a new pyrazolo[1,5-a]pyrido[2,1-c]pyrazine system.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem