23602-10-0Relevant academic research and scientific papers
Formyl azide: Properties and solid-state structure
Zeng, Xiaoqing,Bernhardt, Eduard,Beckers, Helmut,Banert, Klaus,Hagedorn, Manfred,Liu, Hailiang
, p. 3503 - 3506 (2013)
The simplest acyl azide, HC(O)N3, has been prepared as the neat substance and characterized by IR and Raman spectroscopy and low-temperature X-ray crystallography (see solid-state structure; C white, H gray, N blue, O red). Photolysis of the azide in CO-doped solid noble-gas matrices furnished the first experimental proof of the elusive parent acyl isocyanate HC(O)NCO.
N-Formylsaccharin: A new formylating agent
Cochet, Thomas,Bellosta, Véronique,Greiner, Alfred,Roche, Didier,Cossy, Janine
experimental part, p. 1920 - 1922 (2011/10/02)
N-Formylsaccharin, a very cheap reagent, has been revealed to be an efficient and chemoselective formylating agent of amines. Georg Thieme Verlag Stuttgart New York.
Screw Sense Selective Polymerization of Achiral Isocyanides Catalysed by Optically Active Nickel(II) Complexes
Kamer, Paul C. J.,Nolte, Roeland J. M.,Drenth, Wiendelt
, p. 6818 - 6825 (2007/10/02)
Poly(isocyanides), (RN=Cn, can be prepared from isocyanides, , by the catalytic action of nickel(II) compounds.The main chain of these polymers is a rigid helix.This helical conformation results from a restricted rotation around the single bonds that connect the main-chain carbon atoms.Polymerization of achiral isocyanides generally gives a racemic mixture of left- and right-handed helices, whereas polymerization of optically active isocyanides results in helices with an excess of one screw sense.We describe a procedure for obtaining poly(isocyanides) with predominantly one screw sense, starting from an achiral monomer.A catalyst is prepared by adding an optically active amine to a tetrakis(isocyanide)nickel(II) perchlorate complex.Polymerization of various achiral isocyanides with this catalist yields optically active polymers with an enantiomeric excess up to 83percent.
Preparation of nitriles from formamides
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, (2008/06/13)
Aliphatic, araliphatic or aromatic nitriles of the formula R--CN are obtained by reacting N-substituted formamides of the formula R--NHCHO with at least the stoichiometric quantity of an acylating agent (generally a carboxylic acid anhydride, such as acetic anhydride, or ketene) in the gas phase at temperatures above 250° C., without using a catalyst. The process is especially useful in the preparation of nitriles wherein the connecting carbon of R is a tertiary carbon atom. The nitriles are important intermediate products, for example for the preparation of herbicides, surface-active agents and anti-corrosive agents.
Nitrogen-15 Nuclear Magnetic Rasonance Spectroscopy. Natural Abundance Nitrogen-15 Spectra of the cis and trans Isomers of Secondary Alkylformamides
Nakanishi, Hiroshi,Roberts, John D.
, p. 7 - 12 (2007/10/02)
The 15N NMR chemical shifts were measured of a number of N-substituted formamides and acetamides at the natural abundance level.The ratios of the cis and trans isomers for several N-alkylformamides were also determined.Substituent effects on the 15N chemical shifts of formamides are compared with those of some other nitrogen-containing compounds.There is a consistent pattern of behavior of the one bond spin-spin coupling constants 1J(15NH)> wherein the trans isomers of N-alkylformamides are larger than those of the cis isomers.
