14742-23-5Relevant articles and documents
Synthesis of ethanol from aryl methyl ether/lignin, CO2 and H2
Zhang, Jingjing,Qian, Qingli,Wang, Ying,Asare Bediako, Bernard Baffour,Yan, Jiang,Han, Buxing
, p. 10640 - 10646 (2019)
Currently, ethanol is produced via hydration of ethene or fermentation of foods. Lignin and CO2 are abundant, cheap and renewable feedstocks. Synthesis of ethanol using the lignin or its derivatives is of great importance, but is a great challenge and has rarely been reported. Herein, we propose a route to synthesize ethanol from CO2, H2, and lignin or various aryl methyl ethers, which can be derived from lignin. The reaction could be effectively conducted using Ru-Co bimetallic catalyst and the TON of ethanol could reach 145. Interestingly, ethanol was the only liquid product when lignin was used. A series of control experiments indicate that ethanol was formed via cleavage of aryl ether bond, reverse water gas shift (RWGS) reaction, and C-C bond formation. This protocol opens a way to produce ethanol using abundant renewable resources.
A Dynamic Equilibrium of Oxaphosphetanes
Geletneky, Christian,Foersterling, Frank-Holger,Bock, Willi,Berger, Stefan
, p. 2397 - 2402 (2007/10/02)
The course of the Wittig reaction was investigated by rapid injection NMR spectroscopy.Rate constants for the formation of oxaphosphetanes were determined.A new dynamic equilibrium of oxaphosphetanes was observed for the first time.The solvent and substituent dependence of the new effect was investigated.By labeling various oxaphosphetanes with 13C and 17O the lithium salt dependence of the new equilibrium was shown.A lithium adduct of oxaphosphetanes under these conditions is proposed. - Key Words: Wittig reaction / Rapid injection NMR / Dynamic NMR / Oxaphosphetanes
Molecular Structure of s-cis- and s-trans-Acrolein Determined by Microwave Spectroscopy
Blom, C. E.,Grassi, G.,Bauder, A
, p. 7427 - 7431 (2007/10/02)
The rotational spectra of highly enriched single D-, 13C-, and 18O-substituted species of acrolein have been measured and analyzed over 12-58 GHz.The complete substitution structure has been determined for the less abundant s-cis conformer from the ground-state rotational constants.In addition newly assigned μb-type transitions for all isotopic species of the more abundant s-trans-acrolein have improved the structure of this conformer.Careful measurements of the Stark effect have resulted in an accurate determination of the electric dipole moment of the s-trans conformer.A comparison of the molecular structures of the two conformers has revealed significant differences in the central C-C bonds.
