A novel process for preparing aminomethylphosphonate derivatives involves the hydrogenation of cyanophosphonate derivatives in the presence of a catalyst to produce aminomethylphosphonate derivatives.Patrick J. LennonUSUS5905163 * Dec 23, 1997 May 18, 1999 Monsanto Company Method for preparing amino...
reduction of cyano group5-substituted uracilsnickel chloride as co-catalystsodium borohydrideA variety of reductants for the reduction of 1-cyanoethyl-5-substituted uracil derivatives has been examined. Commonly used reductants, borane dimethyl sulphide complex, ammonium formate and sodium borohydride were...
摘要: The authors report a remarkable phosphine-catalyzed γ-addition to a carbonyl group using a carbon nucleophile. The reaction provides products in moderate to good yields (57-94%) and high enantioselectivities (er up to 98.5:1.5).
Cyano and carboxy derivatives of substituted styrenes of formula I <CHEM> (a) X is -(CnH2n)- in which n has a value of 1, 2 or 3, and R<1> is alkyl of 1 to 10 carbon atoms, monocycloaIkyl of up to 10 carbon atoms, polycycloalkyl of up to 10 carbon atoms, or benzocycli...
I. Synthesis polymethylenepolyamines by reduction of cyanoethylated alpha, omega-alklenediamines. J. Med. Chem., 7, 710-716... M Israel,JS Rosenfield,EJ Modest - 《Journal of Medicinal Chemistry》 被引量: 136发表: 1964年 Synthesis of Ni Nanoparticles by Reduction of NiO Prepared with a ...
Borane-amine complexes provide an unusually fast and selective reduction of a deoxynucleoside N-acyl group to a corresponding N-alkyl group. Three different nucleosides (dG, dA, and dC) each having one of three N-protecting groups (benzoyl, isobutyryl, or acetyl) were used to prepare N-alkyla...
KOH was mixed with g-C3N4 and further heat-treated to successfully prepare a K-doped g-C3N4 catalyst rich in the cyano group. A variety of characterization methods have verified that the K+ doping process leads to the emergence of the cyano group. K+ and cyano group promoted the separation...
Fourier transform-infrared spectroscopy analysis suggested that carboxyl, hydroxide, amine, amide, cyano-group, and phosphate groups from the fungal cell wall were involved in chromium binding by the complexation with the Cr(III) and Cr(VI) species. A Cr(VI) removal mechanism of Cr(VI) ...
4.1Oxidationofalcoholstoaldehydesandketones Classicalprocedure:Chromium(VI)reagent SomereagentscanobviatethetoxicityofChromium(VI).Methodsforoxidationofalcohol:Oxidationmechanism:E2-likeprocess.Deuteriumsubstitutionofthe-Hinisopropanolslowstherateofchromicacidoxidationbysevenfold.-Hisremovedinaslowstep Relative...
Using alcohols as alkylation reagents for 4-cyanopyridinium and N,N′-dialkyl-4,4′-bipyridinium and their one-dimensional iodoplumbates Solvothermal reactions of PbI 2 with 4-cyanopyridine ( 4-cypy ) or 4,4′-bipyridine ( 4,4′-bipy ) and alcohols ( ethanol , propanol , iso-propanol ,...