Product Details of 19777-66-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (S)-Propane-1,2-diamine dihydrochloride, is researched, Molecular C3H12Cl2N2, CAS is 19777-66-3, about Synthesis of Optically Active Imidazolines, Azapenams, Dioxocyclams, and Bis-dioxocyclams. Author is Hsiao, Yi; Hegedus, Louis S..
Optically active 4-methyl-4-carbomethoxy-Δ2-imidazoline I was efficiently synthesized on a multigram scale. Photolysis of I with (methoxymethylcarbene)chromium complex produced the optically active azapenam II in good yield and with high stereoselectivity. Acid-catalyzed dimerization of II, followed by reduction, produced the optically active dioxocyclam III in good yield. Using a bis-carbene complex, the optically active bis-dioxocyclam IV was produced in excellent yield.
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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider