Application of 15666-97-4,Some common heterocyclic compound, 15666-97-4, name is Octyl 2-cyanoacetate, molecular formula is C11H19NO2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
To a solution of compound 1 (575 mg, 1 mmol) in chloroform (30 mL), octyl cyanoacetate (601 mg, 3.05 eq) and two drops of triethylamine were added, and the mixture was refluxed overnight under nitrogen. After cooling to r.t., DCM was added and the solution was washed with water and dried over MgSO4. After solvent was removed by evaporation, the residue was purified through column chromatography (silica gel, petroleum ether:ethyl acetateof 2:1 in v:v) to give target compound (890 mg) as a deep orange solid with yield of 80%. 1H NMR (300 MHz, CDCl3) (ppm): 8.28 (s, 3H), 7.75-7.73 (d, 3H, J 7.4 Hz), 7.65-7.63 (d, 6H, J 8.7 Hz),7.38-7.37 (d, 3H, J 4.0 Hz), 7.20-7.17 (d, 6H, J 8.7 Hz), 4.31-4.27 (t, 6H, J 6.7 Hz), 1.77-1.70 (m, 6H), 1.42-1.28 (m, 30H), 0.89e0.85(m, 9H). 13C NMR (75 MHz, CDCl3) (ppm): 163.1, 153.9, 147.6, 146.4,139.3, 134.6, 128.2, 127.8, 124.7, 124.7, 123.9, 116.1, 97.7, 66.6, 31.8,29.2, 29.1, 28.6, 25.8, 22.6, 14.1. FTIR (KBr, cm-1): 3023, 2956, 2924,2854, 2215 (C?N), 1719 (C?O), 1580, 1495, 1438, 1327, 1279, 1217,1189, 1096, 1066. MS (MALDI-TOF) calcd for C66H72N4O6S3 1112.461, found 1112.366. Melting point (Mp) 146.2 C. HRMS: M+ calcd for 1112.4506, found 1112.4512.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Octyl 2-cyanoacetate, its application will become more common.
Reference:
Article; Li, Wei; Li, Qingduan; Duan, Chunhui; Liu, Shengjian; Ying, Lei; Huang, Fei; Cao, Yong; Dyes and Pigments; vol. 113; (2015); p. 1 – 7;,
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