Deoxygenative hydroboration of primary, secondary, and tertiary amides: Catalyst‐free synthesis of various substituted amines
作者:Jaeeun Yi、Hyun Tae Kim、Ashok Kumar Jaladi、Duk Keun An
DOI:10.1002/bkcs.12438
日期:2022.1
less reactive functional groups under catalyst-free conditions is an interesting aspect and requires a typical protocol. Herein, we report the synthesis of various primary, secondary, and tertiary amines through hydroboration of amides using pinacolborane under catalyst-free and solvent-freeconditions. The deoxygenative hydroboration of primary and secondary amides proceeded with excellent conversions
Zirconium-hydride-catalyzed site-selective hydroboration of amides for the synthesis of amines: Mechanism, scope, and application
作者:Bo Han、Jiong Zhang、Haijun Jiao、Lipeng Wu
DOI:10.1016/s1872-2067(21)63853-6
日期:2021.11
diverse amines. Various readily reducible functional groups, such as esters, alkynes, and alkenes, were well tolerated. Furthermore, the methodology was extended to the synthesis of bio- and drug-derived amines. Detailed mechanistic studies revealed a reaction pathway entailing aldehyde and amido complex formation via an unusual C–N bond cleavage-reformation process, followed by C–O bondcleavage.
Transition metal nanoparticles stabilized by ammonium salts of hyperbranched polystyrene: effect of metals on catalysis of the biphasic hydrogenation of alkenes and arenes
作者:Lei Gao、Keisuke Kojima、Hideo Nagashima
DOI:10.1016/j.tet.2015.04.081
日期:2015.9
an excellent stabilizer of ruthenium, rhodium, iridium, palladium, and platinum nanoparticles from 1 to 3 nm in size uniformly dispersed in the polymer matrix. The catalytic performance of the resulting metal-polymer composites, [email protected]3+Cl−, is dependent on the metal. This dependence was investigated by assessing the hydrogenation of alkenes and arenes. The utility of [email protected]3+Cl−
A novel series of N-(1-aminoalkylidene)carboximidamides as potential hypoglycemia agents
作者:Henry J. Breslin、Michael J. Kukla、Robert W. Tuman、Mary C. Rebarchak、Charles R. Bowden
DOI:10.1021/jm00063a009
日期:1993.5
Nitrogen heterocyclic carboximidamides, such as linogliride, 1a, have been shown to possess significant hypoglycemic activity and have shown clinical efficacy as potential antidiabetic agents. We evaluated the biological significance of the heterocyclic ring A of general structure 1, which has always been maintained in this class of compounds, by preparing acyclic compounds of general structure 2.
METHOD FOR PRODUCING INHIBITOR OF ACTIVATED BLOOD COAGULATION FACTOR X (FXA)
申请人:DAIICHI SANKYO COMPANY, LIMITED
公开号:US20170050983A1
公开(公告)日:2017-02-23
An object of the present invention is to provide a novel method for producing a compound, a salt thereof, or a hydrate of the compound or the salt, which is an FXa inhibitor. The object can be attained by a production method in which a production method via a compound represented by formula (1-1), etc., from a compound represented by the following formula (1-x), etc., is used for a method for producing a compound represented by the following formula (X), etc. [wherein X represents a halogen atom or the like, and R
1
represents an optionally substituted phenyl group].