13509-27-8Relevant articles and documents
Improved Synthesis of Unsymmetrical Carbonate Derivatives Using Calcium Salts
Hamada, Tomohito,Okada, Michiaki,Yamauchi, Akiyoshi,Kishikawa, Yosuke
, p. 667 - 673 (2019)
An effective synthetic method for unsymmetrical carbonate species has been developed. Calcium oxide and calcium hydroxide were found to be highly effective for this reaction, affording unsymmetrical carbonates in high yield and purity. Calcium chloride, which is a coproduct, serves as a water scavenger that can be easily removed. Additional drying processes and complicated purification steps are not necessary in this reaction. This improved process is important in terms of green sustainable chemistry principles.
Methylchloroformate synthesis via direct interaction of palladium di(methoxycarbonyl) complexes with CuCl2: utilization in the synthesis of carbonates and carbamates
Giannoccaro, Potenzo,Ravasio, Nicoletta,Aresta, Michele
, p. 243 - 248 (1993)
ClCOOCH3 has been obtained in very good yield by reaction of (L2 = 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen)> with CuCl2.The in situ reaction of ClCOOCH3 with alcohols or amines produces carbonates or carbamates.
Proton Inventories of the Basic Methanolysis of Phenyl Methyl Carbonate and Diphenyl Carbonate
Stratton, Janis,Gatlin, Byron,Venkatasubban, K. S.
, p. 3237 - 3240 (1992)
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Selective O-Methylation of Phenol with Dimethyl Carbonate over Catalysts Supported on CaO
Chen, Shijun,Li, Shaoying,Tang, Ying,Xu, Zhongying,Zhang, Zhifang
, p. 496 - 506 (2021/08/23)
Abstract: In this work CaO-based catalysts were found to be efficient heterogeneous catalysts for the methylation of phenol with dimethyl carbonate (DMC) in a closed high pressure reactor. The optimization experiments have been carried out to obtain best phenol conversion and the results showed that CaO catalyst modified with KCl had the best catalytic performance. When the reaction was carried out at 200°C, with phenol to dimethyl carbonate molar ratio of 1 : 2, 15% KCl/CaO catalyst dosage of 3%, reaction time 9 h, 100% conversion of phenol and 95% selectivity towards anisole have been achieved. The structure and properties of the materials were thoroughly characterized by Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET). The close correlation was found between surface basicity of the catalysts and their catalytic performance for phenol conversion and anisole selectivity.
Diphenyl carbonate compound preparation method
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Paragraph 0110; 0111; 0119-0139, (2020/04/01)
The invention relates to the field of diphenyl carbonate synthesis, and discloses a diphenyl carbonate compound preparation method, which comprises: in the presence of a catalyst represented by a formula (1-1) or a formula (1-2), carrying out a transesterification reaction on a phenol compound represented by a formula (II) and a diester carbonate compound represented by a formula (III), wherein R1, R2 and R3 are selected from a C1-C14 aliphatic hydrocarbon group, a C3-C14 cycloalkyl group, a C6-C14 aryl group, a C7-C14 alkylaryl group, a C7-C14 aralkyl group and a C10-C14 condensed ring aryl group, and X is halogen. The method is high in catalytic activity, high in selectivity and good in stability. Formula (1-1) is (H-[O-Si-(R1)2]n-O)x1-Ti-(OR3)y1X(4-x1-y1), and formula (1-2) is [Si(R2)xO]x2-Ti-(OR3)y2X(4-x2-y2).