Formula: C7H11NO2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: tert-Butyl 2-cyanoacetate, is researched, Molecular C7H11NO2, CAS is 1116-98-9, about An Air- and Water-Stable Hydrogen-Bond-Donor Catalyst for the Enantioselective Generation of Quaternary Carbon Stereocenters by Additions of Substituted Cyanoacetate Esters to Acetylenic Esters. Author is Luu, Quang H.; Gladysz, John A..
The chiral enantiopure cobalt(III) complex Δ-[Co((S,S)-dpen)3]3+ 2Cl- B(C6F5)4- (dpen = 1,2-diphenylethylenediamine) was found to be an effective catalyst, together with pyridine (10 mol% each), for enantioselective additions of substituted cyanoacetate esters R1CH(CN)CO2R2 (R1 = H2C:CHCH2, Ph, PhCH2, 1-naphthylmethyl, 3-furylmethyl, etc.; R2 = Et, t-Bu) to acetylenic esters R3CCCO2R4 (R3 = H, MeO2C, EtO2C; R4 = Me, Et, t-Bu). The resulting adducts I were formed predominantly with the CO2R4 moiety trans to new carbon-carbon bond (avg. ratio 98:2) and with 70-98% ee (avg. 86%). NMR experiments showed that cyanoacetate and acetylenic esters and pyridine can hydrogen bond to certain NH groups of the catalyst. The reaction rates are zero order in cyanoacetate and acetylenic esters as well as catalyst.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem