Results 331 to 340 of about 296,130 (365)

Photoresponsive Carboxylic Acids

Liebigs Annalen, 1996
AbstractA norbornadiene tetracarboxylic acid was synthesized the pKs of which can be changed by irradiation forming the quadricyclane derivative or by catalytical reisomerization to the norbornadiene. The pKs difference of both isomers in the second and fourth dissociation step is 0.59 and 0.68 units.
Rainer Herges, Wolfgang Reif
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ChemInform Abstract: Carboxylic Acids and Esters

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Derivatives of Carboxylic Acids

2014
In frame of the mechanism of substitution on the unsaturated carbon tom, the properties and the typical reactions of carboxylic acid derivatives is represented. The compounds, which belong to classes of compounds such as esters, anhydrides, acyl halides, and amides, are discussed.
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The Derivatives of Carboxylic Acids [PDF]

, 1986
In the design of new neuromuscular blocking agents, attention is attracted to the derivatives of the esters of various carboxylic and dicarboxylic acids. The reason for this is that they are hydrolyzed in the organism, the duration of their action being, therefore, limited.
D. A. Kharkevich, A. P. Skoldinov
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Synthesis of Carboxylic Acids

1991
From the standpoint of carbonylation chemistry, carboxylic acids and their derived esters, amides, anhydrides, and acyl halides are best regarded as a group of closely related and readily interconvertible compounds based on the formally disconnected structure {[E] +...CO...[Nu]−}. In most cases [E] represents a potentially electrophilic carbon-centered
D. J. Thompson, M. V. Twigg, H. M. Colquhoun   +2 more
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Carboxylic Acids and Their Derivatives

1978
Radical additions to unsaturated compounds are attractive methods for preparing carboxylic acids and their derivatives (ester, halide, lactone, amide, anhydride). The carboxylic acid function may be in the unsaturated compound, for example cyclopentanone adds to undecylenic acid affording a 70% yield of product [1].
Maxwell James Parrott, David I. Davies
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ChemInform Abstract: Carboxylic Acids and Derivatives

ChemInform, 1979
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Volatile carboxylic acids

1982
Previous chapters have described the methods required for the extraction and determination of acidic metabolites in physiological fluids. None of the methods described above, except perhaps liquid chromatography of untreated fluid, are suitable for the determination of the short-chain C1–C5 carboxylic acids.
A. M. Lawson, R. A. Chalmers
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Carboxylic Acids and Phenols

1985
The purpose of this chapter is an inventory of the types of organic acids and phenols in ground water, rain water, interstitial water, river, and lake water. In addition, this chapter discusses the distribution, composition, and chemistry of organic acids and phenols.
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Carboxylic Acids and their Derivatives

1988
The acidity of carboxylic acids is considered in Chapter 4. This chapter is concerned with the synthesis, reactivity and inter-relationships of carboxylic acids and their derivatives.
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