3459-80-1Relevant articles and documents
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Neuman,R.C.,Behar,J.V.
, p. 657 - 661 (1971)
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Electrophilic Substitution in Pyrroles. Part 4. Hydrogen Exchange in Acid Solution
Alexander, Robert s.,Butler, Anthony R.
, p. 110 - 112 (1980)
Hydrogen exchange at the unsubstituted positions in 1,2,5-trimethyl- and 1,3,4-trimethyl-pyrrole in aqueous buffer has been examined.The two positions were found to be of similar reactivities.General acid catalysis was detected.No hydrogen exchange on the methyl groups of 2,3,4,5-tetramethylpyrrole, even in strong acid, was detected.The 13C n.m.r. spectrum of the tetramethylpyrrole was examined.
The Guanidine-Promoted Direct Synthesis of Open-Chained Carbonates
Shang, Yuhan,Zheng, Mai,Zhang, Haibo,Zhou, Xiaohai
, p. 933 - 938 (2019/09/30)
In order to reduce CO2 accumulation in the atmosphere, chemical fixation methodologies were developed and proved to be promising. In general, CO2 was turned into cyclic carbonates by cycloaddition with epoxides. However, the cyclic carbonates need to be converted into open-chained carbonates by transesterification for industrial usage, which results in wasted energy and materials. Herein, we report a process catalyzed by tetramethylguanidine (TMG) to afford linear carbonates directly. This process is greener and shows potential for industrial applications.
Synthesis of Benzyl Alkyl Ethers by Intermolecular Dehydration of Benzyl Alcohol with Aliphatic Alcohols under the Effect of Copper Containing Catalysts
Bayguzina,Gimaletdinova,Khusnutdinov
, p. 1148 - 1155 (2018/10/24)
Synthesis of benzyl alkyl ethers was performed in high yields by intermolecular dehydration of benzyl and primary, secondary, tertiary alcohols under the effect of copper containing catalysts. The formation of benzyl alkyl ethers occurs with participation of benzyl cation.