1962-75-0Relevant articles and documents
Palladium-Catalyzed Butoxycarbonylation of Polybromo(hetero)arenes: A Practical Method for the Preparation of (Hetero)arenepolycarboxylates and -carboxylic Acids
Wu, Weilong,Jing, Yongkang,Zhang, Deyi,Yan, Xianghe,Liang, Rong,Lu, Zhiqiang,Ji, Baoming
, p. 403 - 410 (2021/10/12)
The palladium-catalyzed alkoxycarbonylation of polybromo (hetero)arenes was investigated systematically. The results show that cheap and readily available in situ Pd(OAc) 2/ rac -BINAP catalyst can catalyze the butoxycarbonylation of various polybromo(hetero)arenes efficiently, and gave (hetero)arenepolycarboxylates with moderate to high yield (59-94%). Using this method, two new compounds, 4,4'-bis(butoxycarbonyl)-1,1'-bi-2-naphthol and dibutyl [2,2'-bipyrimidine]-5,5'-dicarboxylate, are reported for the first time. In addition, the gram-scale preparation of carboxylate and carboxylic acids was successful performed by butoxycarbonylation followed by hydrolysis. This shows the wide scope of substrates and practical applications of the Pd(OAc) 2/ rac -BINAP catalytic system. Moreover, these carboxylic acids and carboxylates can be used as ligands or structural units to construct MOFs, metal complexes, and COFs etc.
PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME
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Paragraph 0068, (2021/05/07)
A plasticizer composition and a resin composition including the same. The plasticizer composition includes a terephthalate-based material including a mixture of dibutyl terephthalate, butyl(2-ethylhexyl) terephthalate and di(2-ethylhexyl) terephthalate; and a glyceride-based material. The plasticizer composition has improved physical properties such as tensile strength, elongation rate and modulus and also has excellent properties attributable to the inclusion of a terephthalate-based material, such as excellent transmittance, transparency and migration loss properties.
Synthesis of Esters from Stable and Convenient Sulfoxonium Precursors under Catalyst- And Additive-Free Conditions
Wu, Xiao-Feng,Yuan, Yang
, p. 1820 - 1824 (2019/09/09)
A convenient and efficient procedure for the construction of esters from stable sulfoxonium ylides and alcohols has been developed. This protocol presents a broad substrate scope and good yields of the desired esters can be isolated. Notably, no catalyst, oxidant, base or any other additive is required.