2 results about "Benzyl cyanide" patented technology

This invention relates to a trifluoromethyl-substituted pyrene-phenylacetonitrile derivative, its preparation method, and its application. A trifluoromethyl-substituted pyrene-phenylacetonitrile derivative has the structural formula: [formula omitted]. The preparation method involves dissolving 1-pyrene formaldehyde, the corresponding trifluoromethylphenylacetonitrile, and an alkaline catalyst in an organic solvent, and carrying out a Knoevenagel condensation reaction under heating conditions. The reaction product is then post-treated to obtain the pyrene-phenylacetonitrile derivative. The application of a trifluoromethyl-substituted pyrene-phenylacetonitrile derivative in electrical storage devices is also discussed. This invention achieves precise control of storage performance by introducing trifluoromethyl groups at different positions on the benzene ring of the pyrene-phenylacetonitrile backbone, providing a novel design approach for developing new multi-level electrical storage materials. The synthesis route is concise and has broad application prospects in the field of high-density non-volatile memory.

The application discloses a method for preparing phenylacetonitrile based on a continuous flow dynamic microreactor. By regulating the flow rates of the two-phase reactants of benzyl chloride and sodium cyanide containing a phase transfer catalyst, the residence time of the reaction is regulated. Meanwhile, the flow rate ratio of the two-phase reactants is dynamically adjusted according to the real-time feedback of the yield of phenylacetonitrile, so that the fine control of the cyanation reaction is realized. The microreactor of the application is built-in with magnetic stirring. On the one hand, the microdroplets with excellent dispersibility are formed, which has excellent process intensification effect on the cyanation reaction, greatly improves the phase transfer catalytic efficiency, and makes the yield of phenylacetonitrile increase to more than 97%, and the reaction time is reduced to 30 minutes. The space-time yield is increased from 460 g / (m 3 ·min) of the tank process to 13000 g / (m 3 ·min), which is increased by about 30 times. On the other hand, the sodium chloride particles can be continuously broken, avoiding the blockage of the microchannel caused by the deposition and aggregation of sodium chloride particles, solving the problem that the ordinary microchannel reactor cannot cope with the high solid content system, and ensuring the long-period stable operation.