Patent
Preparation of 6-aminocaproic acid via muconic acid mononitrile
TLDR
Phenol, catechol and orthobenzoquinone are converted to muconic acid mononitrile by reaction with a copper(II)-ammonia reagent as discussed by the authors.Abstract:
Phenol, catechol and orthobenzoquinone are converted to muconic acid mononitrile by reaction with a copper(II)-ammonia reagent. The copper(II)-ammonia reagents can be prepared by the reaction of cuprous chloride with oxygen or air in liquid ammonia or in ammonium hydroxide or in pyridine followed by addition of ammonia or ammonium hydroxide. Muconic acid mononitrile is hydrogenated to 6-aminocaproic acid, which can be cyclized to caprolactam.read more
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Preparation of lactams from aliphatic alpha,omega-dinitriles
TL;DR: In this article, a process for the preparation of six-membered ring lactams from aliphatic.alpha.,.omega.-dinitriles has been developed, in which an ammonium salt of the.omega-nitrilecarboxylic acid is first converted to the corresponding lactam by hydrogenation in aqueous solution.
Patent
Preparation of lactams from aliphatic alpha , omega -Dinitiles
TL;DR: In this article, a process for the preparation of six-membered ring lactams from aliphatic alpha, omega-dinitriles has been developed, in which an alphatic alpha, omega -dinitrile is first converted to an ammonium salt of an omega -nitrilecarboxylic acid in aqueous solution using a catalyst having an aliphatically nitrilase (EC 3.5.7) activity, or a combination of nitrile hydratase ( EC 4.2.84) and amidase (E
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Patent
Oxidative coupling of alkylphenols catalyzed by metal ammonia complexes
TL;DR: Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alkylphenols are prepared by contacting an aqueous mixture of an alkylpol with oxygen in the presence of sufficient alkaline material to sustain a pH in the range of 6-9.5 during the reaction as mentioned in this paper.
Patent
Process for producing caprolactam from 6-aminocaproic acid
TL;DR: Caprolactam is obtained in high yield and in short reaction time by completely dissolving 6-aminocaproic acid in methanol or ethanol and heating the solution at 170°-200° C as discussed by the authors.
Patent
Method of producing ketonitriles
TL;DR: In this paper, the authors proposed a Cataly tic hydrogenation of UNSATURATED KETONITRILES of the formulae: NC-CH 2-CH2-C(-R1)(-R2)-CH=C(R3)-CO-R4 wherein R1 and R2 and 1 TO 4 CARBON ATOM ALKYL GROUPS; R3 is HYDROGEN or AARYL Group; and R4 is an ARYL Group or A 1 To 4 CAR
Patent
Preparation of muconic acid mononitriles and copper(II)-ammonia reagent therefor
TL;DR: In this article, the copper(II)-ammonia reagents are used to convert substituted and unsubstituted phenols, catechols and orthobenzoquinones to muconic acid mononitriles.