Cooperative hydrogen atom transfer and chiral hydrogen-bonding catalysis as a new platform for the asymmetric synthesis of azaarene derivatives is reported. By using tetrabutylammonium decatungstate photocatalyst phosphoric acid catalyst, transformations variety commercially available hydrocarbons silanes with diverse ?-branched 2-vinylazaarenes could efficiently experience tandem radical conju...

3 Proof of Theorem 1 9 3.1 Estimation of the g1 term. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2 Estimation of the g3 term. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3 Estimation of the g2 term. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.4 Putting everything together. . . . . . . . . . . . . . . . . . . . . ....

a mixture oftrimethylchlorosilane (tms-cl), lithium and tetrahydrofuran (thf) reacts with imines to produce disilyl compound by addition of two trimethylsilyl (tms) groups to the double bond of the imine. on hydrolysis the tms on nitrogen is substituted by hydrogen and yields ? -silylamine. in the presence of acetyl chloride (ch coc1), benzene and pyridine, the ?-silyamine produces the correspo...

heterogeneous catalytic hydrogenation of cyclohexene, catalyzed by pt/a1203, was carried out in thirteenvarious solvents (four alcoholic solvents, six aprotic polar solvents and three non polar solvents) at 25 °c.single-parameter correlations of logk vs. normalized polarity parameter (etn), hydrogen-bond acceptorbasicity (p), hydrogen-bond donor acidity (a) and dipolarity/polarizibility (it*) d...

The formation of water through hydrogenation of oxygen on platinum occurs at a surprisingly low reaction rate. The reaction rate limited process for this catalytic reaction is, however, yet to be settled. In the present work, the reaction rates of the first and the second hydrogen addition steps are compared when hydrogen is obtained through intense synchrotron radiation that induces proton pro...