Electrochemical oxidation of ketone acylhydrazones and their hydrogen cyanide adducts in sodium cyanide-methanol. Transformation of ketones to nitriles
作者:Mitsuhiro Okimoto、Toshiro Chiba
DOI:10.1021/jo00290a048
日期:1990.2
Phase-transfer catalyzed formation of .alpha.-cyano ketones from ketone aroylhydrazones in NaCN(aq)-inert organic solvent system
作者:Toshiro Chiba、Mitsuhiro Okimoto
DOI:10.1021/jo00021a038
日期:1991.10
Alpha-Cyanoalkyl aryl ketones can be obtained from ketone aroylhydrazones by heterogeneous reaction with aqueous sodium cyanide, an inert organic solvent, and acetic acid in the presence of air and a catalytic amount of a quaternary ammonium salt. The initially formed HCN adducts undergo air oxidation followed by alkaline-induced decomposition affording the alpha-cyanoalkyl ketones. The phase-transfer catalyst promotes all three reactions.
Nickel-Catalyzed Asymmetric Transfer Hydrogenation of Hydrazones and Other Ketimines
作者:Haiyan Xu、Peng Yang、Pratanphorn Chuanprasit、Hajime Hirao、Jianrong Steve Zhou
DOI:10.1002/anie.201501018
日期:2015.4.20
We report the use of nickel catalysts for the catalytic transferhydrogenation of hydrazones and otherketimines with formic acid. Strongly donating bisphosphines must be used to support the catalysts. As in enzymatic catalysis, attractive weak interactions may be important for stereochemical control by the nickel/binapine catalyst.
A rubber composition prepared by compounding 0.05 to 20 parts by weight of at least one selected from substituted hydrazide compounds represented by the following Formulas (I) to (IV) per 100 parts by weight of a rubber component comprising at least one rubber selected from the group consisting of natural rubber and synthetic rubber, and a pneumatic tire using the same:
wherein A represents one selected from the group consisting of an aromatic group which may have a substituent, a hydantoin ring which may have a substituent, and a saturated or unsaturated linear hydrocarbon having 1 to 18 carbon atoms; Y represents hydrogen, an amino group, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group, an alkenyl group, an aromatic group, a pyridyl group or hydrazino group; and R1 to R11 each represent hydrogen, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group or an aromatic group.