- 1,3-CYCLOHEXANEDIONE DERIVATIVES AND 1,3-CYCLOPENTANEDIONE DERIVATIVES AS BUFFERING MOLECULES IN NON-AQUEOUS SOLUTIONS
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This invention relates to 1,3-cyclohexanedione derivatives and 1,3-cyclopentanedione derivatives that have buffering function in non-aqueous solutions and to the use thereof for tuning the conditions to control chemical events in non-aqueous solutions. One aspect of the invention is a method for buffering a non-aqueous solution, including adding a buffering molecule to the non-aqueous solution, in which the non-aqueous solution contains an organic solvent, the buffering molecule is a 1,3-cyclohexanedione derivative or a 1,3-cyclopentanedione derivative, and the buffering molecule is optionally conjugated to a solid support.
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Paragraph 0055
(2021/04/23)
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- Control of Chemical Reactions by Using Molecules that Buffer Non-aqueous Solutions
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Control of chemical reactions is necessary to obtain designer chemical transformation products and for preventing decomposition and isomerization reactions of compounds of interest. For the control of chemical events in aqueous solutions, the use of aqueo
- Sohail, Muhammad,Tanaka, Fujie
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supporting information
p. 222 - 229
(2019/11/26)
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- A Conformationally Defined 6-s-trans-Retinoic Acid Isomer: Synthesis, Chemopreventive Activity, and Toxicity
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A conformationally defined retinoic acid analog (1) which contains a dimethylene bridge to maintain the 6-s-trans orientation for two terminal double bonds in the polyene chain was synthesized.A Reformatsky reaction was utilized to extend the polyene chai
- Vaezi, Michael F.,Alam, Muzaffar,Sani, Brahma P.,Rogers, Tina S.,Simpson-Herren, Linda,et al.
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p. 4499 - 4507
(2007/10/02)
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- Proton Transfer Reactions of 2-Alkyl-4-(4-nitrophenylazo)resorcinol Monoanions with Hydroxide Ion in Me2SO-H2O Mixtures
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The kinetic behaviour observed for the removal of the hydrogen-bonded O...H...N proton from 2-alkyl-4-(4-nitrophenylazo)resorcinol monoanions by hydroxide ion in Me2SO-H2O mixtures depends on the solvent ratio and on the 2-alkyl substituent (methyl, ethyl or isopropyl).For example, for 2-isopropyl-4-(4-nitrophenylazo)resorcinol monoanion in aqueous solution and in 30percent (v/v) Me2SO-H2O the rate goes through a minimum as the hydroxide-ion concentration is increased.In 60 and 80percent (v/v) Me2SO-H2O a practically linear dependence of rate on hydroxide-ion concentration is observed whereas in 90percent (v/v) Me2SO-H2O the rate increases to a limiting value.The dependence of rate on hydroxide-ion concentration is determined by the relative values of the rate coefficients for attack of hydroxide ion on the hydrogen-bonded and non-hydrogen-bonded forms of the monoanion and the rate coefficients for their interconversion.The effects of the solvent and the 2-alkyl substituent are discussed.
- Hibbert, Frank,Phillips, Sian C.
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p. 571 - 574
(2007/10/02)
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