Synthesis of Hindered Anilines: Copper-Catalyzed Electrophilic Amination of Aryl Boronic Esters
作者:Richard P. Rucker、Aaron M. Whittaker、Hester Dang、Gojko Lalic
DOI:10.1002/anie.201200480
日期:2012.4.16
No longer a hindrance: Copper‐catalyzed electrophilicamination of arylboronicesters is accomplished under mild reaction conditions using 2.5–5.0 mol % of a catalyst derived from copper tert‐butoxide and Xantphos ligand (see scheme). The reaction tolerates a wide range of functional groups and can be used to prepare some of the most hinderedanilines made to date.
[EN] INHIBITORS OF CYSTATHIONINE BETA SYNTHASE TO REDUCE THE NEUROTOXIC OVERPRODUCTION OF ENDOGENOUS HYDROGEN SULFIDE<br/>[FR] INHIBITEURS DE LA CYSTATHIONINE BÊTA SYNTHASE UTILISABLES EN VUE DE LA RÉDUCTION DE LA SURPRODUCTION NEUROTOXIQUE DE SULFURE D'HYDROGÈNE ENDOGÈNE
申请人:FOND JEROME LEJEUNE
公开号:WO2013068592A1
公开(公告)日:2013-05-16
The invention is directed to inhibitors of cystathionine beta synthase which, among other biochemical effects, allow reduction of the neurotoxic overproduction of endogenous hydrogen sulphide. These compounds and pharmaceutical compositions containing them are useful for the prevention and treatment of cognitive disorders such as cognitive disorders in Down syndrome. The invention also relates to methods for preventing or treating cognitive disorders including cognitive disorders in Down Syndrome.
Practical catalytic method for synthesis of sterically hindered anilines
作者:Melrose Mailig、Richard P. Rucker、Gojko Lalic
DOI:10.1039/c5cc03565a
日期:——
A practical catalytic method for the synthesis of sterically hinderedanilines is described. The amination of aryl and heteroaryl boronicesters is accomplished using a catalyst prepared in situ from...
Zeolite molecular accessibility and host–guest interactions studied by adsorption of organic probes of tunable size
作者:F. C. Hendriks、D. Valencia、P. C. A. Bruijnincx、B. M. Weckhuysen
DOI:10.1039/c6cp07572j
日期:——
more specifically the micropore architecture of zeolite materials. Evaluation of industrially relevant zeolite materials with 8- (CHA), 10- (MFI) and 12-membered ring pores (FAU) showed that steric bulk influences the rate of adsorption, the amount of probe molecule taken up by the zeolite as well as the interaction of the probe molecule with the zeolite material. Furthermore, a positive linear correlation
to the rotation of the phenylamino moiety of all derivatives do not exceed 246 K indicating the unhindered rotation at room temperature. Using B3LYP/aug-cc-pVDZ, the calculated model chemistry barriers to rotation, dipole moments and first hyperpolarizabilities are within experimental error. We conclude that neglecting the electron donating properties of bridges themselves and internalrotation about