Sulphenamides as synthetic precursors of aminyl radicals
摘要:
Sulphenamides, readily synthesised from reaction between benzenesulphenyl derivatives and amines, undergo facile reaction with radical generating reagents such as tributyltin hydride to yield aminyl radicals.
Homoleptic lanthanide complex Y[N(TMS)2]3 is an efficient homogeneous catalyst for the hydroboration reduction of secondary amides and tertiary amides to corresponding amines. A series of amides containing different functional groups such as cyano, nitro, and vinyl groups were found to be well-tolerated. This transformation has also been nicely applied to the synthesis of indoles and piribedil. Detailed
Phosphine-Free Manganese Catalyst Enables Selective Transfer Hydrogenation of Nitriles to Primary and Secondary Amines Using Ammonia–Borane
作者:Koushik Sarkar、Kuhali Das、Abhishek Kundu、Debashis Adhikari、Biplab Maji
DOI:10.1021/acscatal.0c05406
日期:2021.3.5
primary and secondary amines by nitrilehydrogenation, employing a borrowing hydrogenation strategy. A class of phosphine-free manganese(I) complexes bearing sulfur side arms catalyzed the reaction under mild reaction conditions, where ammonia–borane is used as the source of hydrogen. The synthetic protocol is chemodivergent, as the final product is either primary or secondary amine, which can be controlled
A simpleone-potprocedure for the direct reductive amination of aldehydes using lithium powder and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB) or a polymer supported naphthalene as reducing system is described. The direct reductive amination of a variety of aldehydes with primary amines was achieved simply by adding a mixture of the corresponding carbonyl compound and the amine, over a
[EN] CARBAMOYL DERIVATIVES OF BICYCLIC CARBONYLAMINO-PYRAZOLES AS PRODRUGS<br/>[FR] DÉRIVÉS CARBAMOYLES DE CARBONYLAMINO-PYRAZOLES BICYCLIQUES COMME PROMÉDICAMENTS
申请人:NERVIANO MEDICAL SCIENCES SRL
公开号:WO2009138440A1
公开(公告)日:2009-11-19
There are provided bicyclic carbonylamino-pyrazoles of formula (I), wherein the variables are as specified in the claims, for use as medicament, in particular for the treatment of diseases due to the malfunctioning of protein kinases (PKs), such as cancer, pharmaceutical compositions comprising such carbamoyl derivatives, and their use as prodrugs of therapeutically active agents. Method of treatment and some new bicyclic carbonylamino-pyrazoles are also object of the present invention.
Understanding Ni(II)-Mediated C(sp<sup>3</sup>)–H Activation: Tertiary Ureas as Model Substrates
作者:D. Dawson Beattie、Anna C. Grunwald、Thibaut Perse、Laurel L. Schafer、Jennifer A. Love
DOI:10.1021/jacs.8b07708
日期:2018.10.3
study of C(sp3)-H bond activation mediated by nickel. Cyclometalated Ni(II) ureate [(PEt3)Ni(κ3- C,N,N-(CH2)N(Cy)(CO)N((N)-quinolin-8-yl))] was synthesized and isolated from the urea precursor, (Me)(Cy)N(CO)N(H)(quinolin-8-yl), via C(sp3)-H activation. We investigated the effects of solvents and base additives on the rate of C-H activation. Kinetic isotope effect experiments showed that C-H activation