Some common heterocyclic compound, 1462-12-0, name is Diethyl 2-ethylidenemalonate, molecular formula is C9H14O4, 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. Product Details of 1462-12-0
General procedure: To a mixture of alkene 1 (0.5 mmol), aldehyde 2 (2.5 mmol), and FeCl2 (1.6 mg, 0.0125 mmol), acetonitrile (3.0 mL) was added under nitrogen at room temperature. Then tert-butyl hydroperoxide 3 (TBHP, 2.0 mmol, 5-6 M in decane) was dropped into the mixture under nitrogen at room temperature. The resulting mixture was stirred under 85 oC for 1 h. The temperature of reaction was cooled to room temperature. The resulting reaction solution was directly filtered through a pad of silica by ethyl acetate. The solvent was evaporated in vacuo to give the crude products. NMR yields are determined by 1H NMR using dibromomethane as an internal standard. Solvent was evaporated and the residue was purified by flash column chromatography on silica gel with ethyl acetate/petroleum ether as eluent to afford the pure product 4.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1462-12-0, its application will become more common.
Reference:
Article; Liu, Kaisheng; Li, Yuanming; Zheng, Xiaojian; Liu, Weiping; Li, Zhiping; Tetrahedron; vol. 68; 50; (2012); p. 10333 – 10337;,
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