2 results about "Diazoacetic ester" patented technology

A fluorine-free carbon chain hydrophobic fabric, and its preparation method and application. A fabric is sequentially soaked in an alkali liquor and an acid liquor to obtain a pretreated fabric; the pretreated fabric then reacts with bromoacetyl bromide to obtain a treated fabric; the treated fabric then reacts with 1,2-bis(p-toluenesulfonyl) hydrazine to obtain a diazotized fabric; the diazotized fabric reacts with a diazoacetate monomer to obtain a fluorine-free carbon chain hydrophobic fabric; and the diazoacetate monomer is butyl diazoacetate, hexyl diazoacetate, octyl diazoacetate, dodecyl diazoacetate, tetradecyl diazoacetate or octadecyl diazoacetate. According to the scheme, diazoacetate is used as a monomer, and different fiber grafting modification processes are used, so as to form different structures on the fiber surface; and the comprehensive properties such as thermal stability, air permeability and breaking strength of the finished fabric are tested, the heat resistance and breaking strength of the finished fabric are reduced, and the air permeability is good.

The present application relates to a kind of methods for calculating the reaction energy of iron-catalyzed o-alkynyl benzoyl diazoacetate metathesis to generate indeno [1,2-c] furan, comprising the following steps: selecting target reaction, designing reaction mechanism cycle diagram;According to the reaction mechanism cycle diagram, the molecular structure model of the intermediate, transition state involved in the reaction process is built;The multiple spin state geometry of each intermediate, transition state under gas phase condition is optimized, and the molecular geometry, electronic energy and gibbs free energy correction value are obtained;Based on the geometry obtained under gas phase condition, single-point energy calculation is carried out in solvent condition, and single-point energy is obtained;The gibbs free energy correction value obtained in step S3 is combined with the single-point energy obtained in step S4, to calculate the gibbs free energy of each intermediate and transition state under solvent condition, and then the energy barrier of each step of reaction and the rate-determining step of reaction are obtained.The method has theoretical reference value for experiment, and can reduce the manpower and material resources required by traditional experiment.