CaO Catalyzed Transesterification of Ethyl 10-Undecenoate as a Model Reaction for Efficient Conversion of Plant Oils and Their Application to Depolymerization of Aliphatic Polyesters was written by Sudhakaran, Swetha;Siddiki, S. M. A. Hakim;Kitiyanan, Boonyarach;Nomura, Kotohiro. And the article was included in ACS Sustainable Chemistry & Engineering in 2022.Category: ethers-buliding-blocks This article mentions the following:
Transesterification of Et 10-undecenoate (derived from castor oil) with cyclohexanemethanol over a CaO catalyst (prebaked at 300°C) gave undec-10-enoate exclusively (yield 92%, selectivity 95-98%) at 100°C, and the activity increased at 120°C with maintaining the high selectivity (97-98%). The transesterification with other alcs., especially primary alcs. (2-ethyl-1-butanol, 1-hexanol, 3-buten-1-ol, and 10-undecen-1-ol), afforded the corresponding esters with high selectivity, indicating the possibility for application of efficient conversion of plant oils to various fine chems. including the monomer for the synthesis of polyesters. Efficient acid-, base-free depolymerization of aliphatic polyesters, poly(ethylene adipate) and poly(butylene adipate), has been demonstrated in this catalysis by transesterification with ethanol and cyclohexanemethanol, affording corresponding adipates and ethylene glycol or butylene glycol exclusively: the reusability of a CaO catalyst has also been demonstrated. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Category: ethers-buliding-blocks).
(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem