Combined lignin defunctionalisation and synthesis gas formation by acceptorless dehydrogenative decarbonylation was written by Zhang, Zhenlei;Zijlstra, Douwe S.;Lahive, Ciaran W.;Deuss, Peter. J.. And the article was included in Green Chemistry in 2020.SDS of cas: 3929-47-3 This article mentions the following:
The valorization of lignin, consisting of various phenylpropanoids building blocks, is hampered by its highly functionalized nature. The absence of the 绾?carbinol group in an unnatural C2 灏?O-4 motif compared to the native lignin C3 灏?O-4 motif provides great opportunities for developing new valorization routes. Thus efficient defunctionalisation approaches that transform the C3 灏?O-4 motif into a simplified C2 灏?O-4 motif are of interest. Based on a study with a series of model compounds, we established a feasible application of an iridium-catalyzed acceptorless dehydrogenative decarbonylation method to efficiently remove the 绾?carbinol group in a single step. This defunctionalisation generates valuable synthesis gas, which can be collected as a reaction product. By this direct catalytic transformation, a yield of ~70% could be achieved for a C3 灏?O-4 model compound that was protected from undergoing retro-aldol cleavage by alkoxylation of the benzylic secondary alc. in the 浼?position. A phenylcoumaran model compound containing a 绾?carbinol group as well as a benzylic primary alc. also proved to be reactive under dehydrogenative decarbonylation conditions, which can further contribute to the reduction of the structural complexity of lignin. Notably, the liberation of synthesis gas was confirmed and the signals for the defunctionalized C2 灏?O-4 motif were observed when this dehydrogenative decarbonylation approach was applied on organosolv lignins. This selective defunctionalized lignin in conjunction with the formation of synthesis gas has the potential to enhance the development of profitable and sustainable biorefineries. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3SDS of cas: 3929-47-3).
3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. 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.SDS of cas: 3929-47-3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem