75996-26-8Relevant academic research and scientific papers
[3]rotaxanes composed of two dibenzo-24-crown-8 ether wheels and an azamacrocyclic complex
Wo?ny, Mateusz,Wi?ckowska, Agnieszka,Trzybiński, Damian,Sutu?a, Szymon,Domaga?a, S?awomir,Wo?niak, Krzysztof
, p. 15845 - 15856 (2018/11/23)
The azamacrocyclic complex was used as a platform for the construction of [3]rotaxanes containing two DB24C8 macrocycles per molecule. The complex unit incorporates two electron deficient π-bond systems and two N-H hydrogen bond donating groups which faci
Metal-mediated reactions of aryl isocyanates with dimethoxycarbene to form isatin derivatives
Rigby, James H.,Brouet, Stephanie A.
supporting information, p. 2542 - 2545 (2013/06/05)
Hydantoin derivatives have been established as the observed product in the reaction of aryl isocyanates with dimethoxycarbene. A change in the reactivity profile of dimethoxycarbene with aryl isocyanates was observed upon the addition of a metal species.
Different enantioselective interaction pathways induced by derivatized quinines
Uccello-Barretta, Gloria,Balzano, Federica,Quintavalli, Cristiana,Salvadori, Piero
, p. 3596 - 3602 (2007/10/03)
The stereochemistries in solution of the diastereoisomeric complexes formed by quinines modified at the hydroxyl site (9-O-acetylquinine; 9-O- (3,5-dimethoxyphenylcarbamate)quinine) or quinuclidine nitrogen (N- benzylquininium chloride) and each enantiomer of 2-(3',5'-dinitrobenzamido)- 1-phenylethanol have been compared to those of the free compounds by 1H NMR investigations. Completely different interaction models, also involving changes of the free state conformations, have been obtained.
Rapid construction of isatin derivatives via addition of bis(alkylthio)carbenes to aryl isocyanates
Rigby, James H.,Danca, M. Diana
, p. 6891 - 6894 (2007/10/03)
Thermally induced cyclization between bis(alkylthio)carbenes, derived from the corresponding oxadiazolines, and substituted aryl isocyanates provides access to a variety of isatin derivatives with good efficiency.
Long-chain Phenols. Part 16. A Novel Synthesis of Homologous Orsellinic Acids and their Methyl Ethers
Durrani, Aziz A.,Tyman, John H. P.
, p. 1658 - 1666 (2007/10/02)
By the novel reaction of 3,5-dimethoxyfluorobenzene with n-alkyl-lithium compounds, followed by carbonation, homologous orsellinic acid dimethyl ethers (6-alkyl-2,4-dimethoxybenzoic acids) have been obtained.The reactions proceeded best with the homologues of methyl-lithium.These reactions are considered to occur by way of 3,5-dimethoxybenzyne. 2,4-Dimethoxyfluorobenzene did not form an aryne but gave 3-fluoro-2,6-dimethoxybenzoic acid instead.Decomposition with water of alkyl-lithium reaction mixtures from 3,5-dimethoxyfluorobenzene yielded 5-n-alkylresorcinol dimethyl ethers.Demethylaton of 6-alkyl-2,4-dimethoxybenzoic acids with boron trichloride proceeded partially and selectively to give the 6-alkyl-2-hydroxy-4-methoxybenzoic acids, and completely with aluminium chloride to give the homologous orsellinic acids.Boron tribromide was less effective, but readily gave the 5-alkyl resorcinols from the corresponding dimethyl ethers.
