Triphenylacetic Acid Amides: Molecular Propellers with Induced Chirality

2014 ◽  
Vol 2015 (4) ◽  
pp. 738-749 ◽  
Author(s):  
Natalia Prusinowska ◽  
Wioletta Bendzińska-Berus ◽  
Maciej Jelecki ◽  
Urszula Rychlewska ◽  
Marcin Kwit
Keyword(s):  
Triphenylacetic Acid

On-Demand Guest Release from MOF-5 Sealed with Nitrophenylacetic Acid Photocapping Groups

2019 ◽  
Author(s):  
Jingjing Yan ◽  
Rick Homan ◽  
Corrianna Boucher ◽  
Prem N. Basa ◽  
Katherine Fossum ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Crystal Violet ◽  
Dye Molecules ◽  
Phenyl Acetic Acid ◽  
On Demand ◽  
Crystal Violet Dye ◽  
Dye Diffusion ◽  
Triphenylacetic Acid

Recently, we demonstrated that triphenylacetic acid could be used to seal dye molecules within MOF-5, but guest release required digestion of the framework by treatment with acid. We prepared the sterically bulky photocapping group [bis-(3-nitro-benzyl)-amino]-(3-nitro-phenyl)-acetic acid (PC1) can prevent Crystal violet dye diffusion from inside MOF-5 until removed by photolysis.

On-Demand Guest Release from MOF-5 Sealed with Nitrophenylacetic Acid Photocapping Groups

2019 ◽  
Author(s):  
Jingjing Yan ◽  
Rick Homan ◽  
Corrianna Boucher ◽  
Prem N. Basa ◽  
Katherine Fossum ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Crystal Violet ◽  
Dye Molecules ◽  
Phenyl Acetic Acid ◽  
On Demand ◽  
Crystal Violet Dye ◽  
Dye Diffusion ◽  
Triphenylacetic Acid

Recently, we demonstrated that triphenylacetic acid could be used to seal dye molecules within MOF-5, but guest release required digestion of the framework by treatment with acid. We prepared the sterically bulky photocapping group [bis-(3-nitro-benzyl)-amino]-(3-nitro-phenyl)-acetic acid (PC1) can prevent Crystal violet dye diffusion from inside MOF-5 until removed by photolysis.

Crystallographic Data. 95.Triphenylacetic Acid

1955 ◽  
Vol 27 (6) ◽  
pp. 1033-1034 ◽  
Author(s):  
O. W. Adams ◽  
W. C. McCrone
Keyword(s):  
Crystallographic Data ◽  
Triphenylacetic Acid

Exhaustive C-methylation of carboxylic acids by trimethylaluminium: A new route to t-butyl compounds

1974 ◽  
Vol 27 (8) ◽  
pp. 1665 ◽  
Author(s):  
A Meisters ◽  
T Mole
Keyword(s):  
Carboxylic Acid ◽  
Benzoic Acid ◽  
Carboxylic Acids ◽  
Cinnamic Acid ◽  
Benzoic Acids ◽  
Naphthoic Acid ◽  
Triphenylacetic Acid

Carboxylic acids are exhaustively C-methylated to t-butyl compounds by excess trimethylaluminium at c. 120�. Benzoic acid for example, gives t-butylbenzene. Similarly methylated are o-fluoro-, o-bromo-, and m-chloro-benzoic acids, 5-chloro-3-phenylsalicylic acid, 1-naphthoic acid, palmitic, oleic and undec-10-enoic acids. Adamantane-1-carboxylic acid gives mostly l-isopropenyladaman- tane, along with some 1-t-butyladamantane. Cinnamic acid gives mainly the allylically rearranged 2-methyl-4-phenylpent-2-ene. Triphenylacetic acid behaves atypically; 1,1,1-triphenylpropan-2-one and 3,3,3-triphenylpropyne result.

Crown ether catalysis of decarboxylation: a general survey of reactivity and detailed analysis of the triphenylacetate anion

1978 ◽  
Vol 56 (1) ◽  
pp. 104-113 ◽  
Author(s):  
D. H. Hunter ◽  
M. Hamity ◽  
V. Patel ◽  
R. A. Perry
Keyword(s):  
Carboxylic Acid ◽  
Crown Ether ◽  
Water Concentration ◽  
Solvent Polarity ◽  
General Survey ◽  
Reaction Conditions ◽  
Diphenylacetic Acid ◽  
Decarboxylation Rate ◽  
Optimum Reaction ◽  
Triphenylacetic Acid

The effect of 18-crown-6 ether 3 on the decarboxylation rate in THF of sodium salts of carboxylic acids formally derived from hydrocarbons has been investigated and these acids include 9-phenylfluorene-9-carboxylic acid, fluorene-9-carboxylic acid, phenylacetylene carboxylic acid, triphenylacetic acid, and diphenylacetic acid. Addition of equimolar 3 resulted in an increase in decarboxylation rate of 13- to 500-fold and there was a correlation between the decarboxylation rate and the pKa value of the product hydrocarbon.The decarboxylation of triphenylacetate was investigated in detail. The effect on reaction rate of cation (Li+, Na+, K+), crown ether concentration, water concentration, and solvent polarity has provided information as to optimum reaction conditions and has helped to clarify the reaction mechanism.

scholarly journals Crystal structure of bis(μ2-methanolato-κO:κO)hexamethylbis(μ2-triphenylacetato-κO:κO′)bis(μ2-triphenylacetato-κ2 O,O′:κO)dialuminiumdilanthanum toluene tetrasolvate

2018 ◽  
Vol 74 (12) ◽  
pp. 1790-1794 ◽  
Author(s):  
Alexander A. Vinogradov ◽  
Dmitrii M. Roitershtein ◽  
Mikhail E. Minyaev ◽  
Konstantin A. Lyssenko ◽  
Ilya E. Nifant'ev
Keyword(s):  
Crystal Structure ◽  
Partial Oxidation ◽  
Title Compound ◽  
Site Occupancy ◽  
Coordination Modes ◽  
Phenyl Rings ◽  
Triphenylacetic Acid

The title compound, [Al2La2(C20H15O2)4(CH3)6(CH3O)2]·4CH3C6H5 or [{La(Ph3CCOO)2(Me3AlOMe)}2]·4CH3C6H5, was formed in a reaction between lanthanum tris(tetramethylaluminate) and triphenylacetic acid (1:1) with unintended partial oxidation. The triphenylacetate ligand exhibits μ2-κ1 O:κ1 O′ bridging and μ2-κ2 O,O′:κ1 O semi-bridging coordination modes, forming a dimeric La2(μ-OCO)4 core. The semi-bridging triphenylacetate group provides additional bonding with an La3+ cation via the π-system of one of its phenyl rings. The trimethylmethoxyaluminate anion, which is coordinated to the La3+ cation by its O atom, displays a rather long La—CMe bond. Two toluene molecules are each disordered over two orientations about centres of symmetry with site occupancy factors of 0.5. The title compound represents the first example of an LnIII complex containing both alkyl alkoxide aluminate and π-bounded arene fragments.

In-situ electrochemical ESR the oxidation of triphenylacetic acid in acetonitrile

1986 ◽  
Vol 200 (1-2) ◽  
pp. 205-215 ◽  
Author(s):  
Richard G. Compton ◽  
Barry A. Coles ◽  
Michael J. Day
Keyword(s):  
Triphenylacetic Acid
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