US5294680 * Jul 24, 1992 Mar 15, 1994 International Business Machines Corporation Amine substituted amide reaction products with amhydride polymersUS5294680 * 1992年7月24日 1994年3月15日 International Business Machines Corporation Polymeric dyes for antireflective coatings...
and the organic phase was combined and transferred to the constant pressure liquid funnel. In another flask, add 30 g (0.15 mole) 27% sodium methanol-methanol solution, keep the internal temperature between 0-5℃ to add the resulting organic phase, drop over, 10-15℃ stirring reaction for ...
Reaction Procedures: Generally, a 5- to 10-fold molar excess of PEG aldehyde over the amount of amine-containing material results in sufficient conjugation. Materials Required: Pegylation buffer: Amine-free aqueous buffer, pH 5.0~6.5. PEG aldehyde stock solution: 50 mg in 1 mL conjugation buff...
The asymmetric microporous phase inversion membranes were prepared according to the dry–wet method that involved immersing the gel-film of PAI (coPAI) in N-MP on glass substrate into aqueous precipitation bath. The reaction solutions were similar to those used for preparation of dense membranes. ...
The reaction of an amine with an acyl group (a carboxylic acid derivative) generates an amide. The nitrogen atom in amines has a lone pair (non-bonded) of electrons which attacks the electron-deficient carbonyl carbon, forming a bond with it.Classification...
aThis step determines the high enantioselectivity of CALB for 1 and limits the rate of amide formation. The equilibrium of the whole process would be driven towards amide formation by a higher concentration of amine 1 in the unionized form in the reaction system 这步确定CALB高enantioselectivity为...
aAt intervals, samples (0.15 mL) were withdrawn from the reaction mixture and extracted twice with diethyl ether. The combined extract was treated with HCl solution (2 N) that dissolved the amine as a chloride salt. The organic layer containing the amide and unreacted acid was removed and the...
Crosslinked polymeric materials are described that contain pendant amine capture groups. The amine capture groups include N-sulfonyldicarboximide groups that can react with amine-containing materials by a ring opening reaction. Reaction mixtures used to
Effect of amine structure and reaction additives on enantioselective deprotonations mediated by homochiral magnesium amide basescyclohexane derivativesdiastereoselective syntheses, enantioselective syntheses (incl. ci/trans‐isomerism)Graphicdoi:10.1016/S0040-4039(01)01465-4John D Anderson...
Aromatic poly(amide amine)s (APAAs), as novel high-performance polymers, have been obtained by the condensation polymerization of N,N'-bis(4-bromobenzoyl)-p-phenylenediamine with two different primary aromatic diamines via palladium-catalyzed aryl amination reaction. The structures of the polymers ...