Biocatalytic <i>N</i>-Alkylation of Amines Using Either Primary Alcohols or Carboxylic Acids via Reductive Aminase Cascades
作者:Jeremy I. Ramsden、Rachel S. Heath、Sasha R. Derrington、Sarah L. Montgomery、Juan Mangas-Sanchez、Keith R. Mulholland、Nicholas J. Turner
DOI:10.1021/jacs.8b11561
日期:2019.1.23
The alkylation of amines with either alcohols or carboxylic acids represents a mild and safe alternative to the use of genotoxic alkyl halides and sulfonate esters. Here we report two complementary one-pot systems in which the reductive aminase (RedAm) from Aspergillus oryzae is combined with either (i) a 1° alcohol/alcohol oxidase (AO) or (ii) carboxylic acid/carboxylic acid reductase (CAR) to affect
General, Green, and Scalable Synthesis of Imines from Alcohols and Amines by a Mild and Efficient Copper-Catalyzed Aerobic Oxidative Reaction in Open Air at Room Temperature
A general, green, and scalablesynthesis of the useful imines and α,β-unsaturated imines is successfully achieved by a low-loading and powerful, mild and efficientcopper-catalyzedaerobicoxidativereaction of alcohols and amines in the openair at roomtemperature under base- and dehydrating reagent-free conditions. This practical reaction can use air as the economic and green oxidant, tolerates
The Direct Synthesis of Unsymmetrical Vicinal Diamines from Terminal Alkynes: A Tandem Sequential Approach for the Synthesis of Imidazolidinones
作者:Laurel Schafer、Alison Lee、Melanie Sajitz
DOI:10.1055/s-0028-1083279
日期:2009.1
reaction is used in the synthesis of unsymmetrical vicinal diamines via the one-pot synthesis of α-cyanoamines. This methodology is further applied to the efficient synthesis of imidazolidinones. An easy-to-use bis(amidate)titanium precatalyst permits efficient approaches to heterocyclic chemistry from terminal alkynes. hydroamination - titanium - amines - heterocycles - tandem reactions
Calix[4]arene-diphosphite rhodium complexes in solvent-free hydroaminovinylation of olefins
作者:Laure Monnereau、David Sémeril、Dominique Matt
DOI:10.1039/c0gc00098a
日期:——
Under solvent-free conditions rhodiumcomplexescontaininghemisphericaldiphosphites based on a calix[4]arene skeleton catalyse efficiently the hydroaminovinylation of α-olefins, thereby leading to high proportions of linear enamines/amines (when starting from secondary amines) or imines (when starting from primary amines). When applying a Rh/olefin ratio of 1:5000, the reaction turned out to be ca
Diastereoselective synthesis of substituted diaziridines from simple ketones and aldehydes
作者:Alexander W. Beebe、Emma F. Dohmeier、Gustavo Moura-Letts
DOI:10.1039/c5cc04813c
日期:——
Diastereopure substituted diaziridines from simple ketones, aldehydes and amines are here reported. These important chemical scaffolds are obtained in the presence of a weak inorganic base and hydroxylamineO-sulfonic acid (HOSA). This method provides a wide variety of substituted diaziridines with high yields and diastereoselectivities.