24332-66-9

Upstream product

• 65-85-0 benzoic acid 
• 652-67-5 Isosorbide 
• 50-70-4 D-sorbitol 
• 7625-23-2 3,6-anhydro-D-glucose 
• 53648-56-9 3,6-anhydro-D-glucitol 
• 98-88-4 benzoyl chloride 
• 100-52-7 benzaldehyde 

Relevant academic research and scientific papers

Oxidative NHC-Catalysis as Organocatalytic Platform for the Synthesis of Polyester Oligomers by Step-Growth Polymerization

The application of N-heterocyclic carbene (NHC) catalysis to the polycondensation of diols and dialdehydes under oxidative conditions is herein presented for the synthesis of polyesters using fossil-based (ethylene glycol, phthalaldehydes) and bio-based (

Visible-Light Photocatalysis Employing Dye-Sensitized Semiconductor: Selective Aerobic Oxidation of Benzyl Ethers

The aerobic oxidation is an attractive approach toward environmentally benign synthesis of fine chemicals. In addition, dye-sensitized semiconductors are underdeveloped photocatalysts for selective organic synthesis. With the aid of catalytic eosin Y-sensitized titanium dioxide, we have developed efficient aerobic photooxidation of benzyl ethers to benzoates, featuring low cost, high atom economy, broad substrate scope, and user-friendly setup. Furthermore, preliminary mechanistic studies established that the reaction pathway likely entails a photoinduced, radical-based two-step process via an isolable peroxide intermediate.

Preparation method of dicarboxylic isosorbide

The invention provides a preparation method of a dicarboxylic isosorbide. According to the preparation method, sorbitol is taken as a raw material, 0.5 to 48h of dehydration is carried out in the presence of a dehydration catalyst at N2 atmosphere at 100 to 180 DEG C, a monoprotic acid and an esterification catalyst are added, reaction temperature is increased to 185 to 250 DEG C for 0.5 to 48h of esterification, and reduced pressure distillation is carried out so as to obtain the dicarboxylic isosorbide product. The dicarboxylic isosorbide is a novel biomass-based plasticizer, can be used for replacing phthalic acid ester in production of polyvinyl chloride products such as agricultural plastic mulching film. Product yield of the preparation method is high; production separation is convenient; the preparation method is friendly to the environment; and application prospect is promising.

Preparation method of dicarboxylic acid isosorbide ester plasticizer

The invention provides a preparation method of a dicarboxylic acid isosorbide ester plasticizer. According to the method, isosorbide and monobasic acid serve as raw materials, and an esterification reaction is carried out for 0.5-48 h at the temperature of 65-250 DEG C under the catalytic effect. Dicarboxylic acid isosorbide ester is obtained through reduced pressure distillation. Dicarboxylic acid isosorbide ester is a non-toxic plasticizer, and can replace phthalic acid ester to be used for production of electric wire and cable sheaths, agricultural plastic mulching films and other polyvinyl chloride products. The product prepared through the method is high in yield, easy to separate and environmentally friendly, and has good application prospects.

Selective Esterification of 1,4:3,6-Dianhydro-D-glucitol

Esterification of 1,4:3,6-dianhydro-D-glucitol (1) with carboxylic acids in the presence of 4-dimethylaminopyridine and dicyclohexylcarbodiimide affords 2-exo-acylates 3 with high regioselectivity, in addition to small amounts of the isomeric 5-endo-acylates 4 and 2,5-diacylates 5.