30182-67-3Relevant articles and documents
Rapid and Multigram Synthesis of Vinylogous Esters under Continuous Flow: An Access to Transetherification and Reverse Reaction of Vinylogous Esters
Mohanta, Nirmala,Chaudhari, Moreshwar B.,Digrawal, Naveen Kumar,Gnanaprakasam, Boopathy
, p. 1034 - 1045 (2019/05/24)
An environmentally benign approach for the synthesis of vinylogous esters from 1,3-diketone and its reverse reaction under continuous-flow has been developed with alcohols in the presence of inexpensive Amberlyst-15 as a catalyst. This methodology is highly selective and general for a range of cyclic 1,3-dicarbonyl compounds which gives a library of linear alkylated and arylated vinylogous esters in good to excellent yield under solvent and metal free condition. Furthermore, the long-time experiment in a continuous-flow up to 40 h afforded 8.0 g of the vinylogous ester with turnover number (TON) = 28.6 and turnover frequency (TOF) = 0.715 h-1 using Amberlyst-15 as a catalyst. Furthermore, a continuous-flow sequential transetherification of vinylogous esters with various alcohols has been achieved in high yield. Reversibly, this vinylogous ester was deprotected or hydrolyzed into ketone using environmentally benign water as a solvent and Amberlyst-15 as a catalyst under continuous-flow process.
Cyclohexenone derivatives and their use for controlling undesirable plant growth
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, (2008/06/13)
Cyclohexenone derivatives of the formula STR1 where R1, R2 R3, R4 and R5 have the meanings given in the disclosure, and their use for controlling unwanted plant growth.
Kinetic Studies of Fast Equilibrium by Means of High-Performance Liquid Chromatography. XVII. Separation of Tautomers of 1,3-Cyclohexanediones
Moriyasu, Masataka,Kato, Atsushi,Hashimoto, Yohei
, p. 2955 - 2956 (2007/10/02)
Tautomers of 1,3-cyclohexanediones have been separated by means of low-temperature high-performance liquid chromatography (HPLC).The ratios of keto- and enol-forms have been found to be highly solvent dependent, which is explained in terms of solute-solvent and solute-solute hydrogen bonding.