N-heterocyclic carbene-catalyzed oxidation of aldehydes for the synthesis of amides via phenolic esters
作者:Miran Ji、Seungyeon Lim、Hye-Young Jang
DOI:10.1039/c4ra04012k
日期:——
N-heterocyclic carbene-catalyzedoxidationusingTEMPO is reported for the conversion of aldehydes to amides. A wide range of amides were synthesized in good yields (up to 72%) via a one-pot, sequential protocol involving oxidative esterification of aldehydes and subsequent aminolysis. To promote efficient aminolysis, various alkoxide leaving groups were evaluated.
Tunable Dehydrogenative Amidation versus Amination Using a Single Ruthenium-NHC Catalyst
作者:Xiaoke Xie、Han Vinh Huynh
DOI:10.1021/acscatal.5b00588
日期:2015.7.2
characterized. Complex 1 bearing the 1,3-dibenzylbenzimidazolin-2-ylidene ligand is able to selectively catalyze both dehydrogenative amidation, mono-, and diamination (N-alkylation) through coupling of simple alcohols with amines effectively yielding a range of amides and secondary and tertiary amines. Selectivity is achieved by controlling the fate of the common hemiaminal intermediate, which in turn can be
Overcoming solid handling issues in continuous flow substitution reactions through ionic liquid formation
作者:Saeed K. Kashani、Ryan J. Sullivan、Mads Andersen、Stephen G. Newman
DOI:10.1039/c8gc00618k
日期:——
the use of acid scavenging organic bases that generate low- to moderate-melting ionicliquids upon protonation. The application of these bases towards the most commonly run substitutions are demonstrated, enabling reactions to be run in flow without requiring additional equipment, specific solvents, or dilute reaction conditions to prevent clogging.
Ferric(III) Chloride Catalyzed Halogenation Reaction of Alcohols and Carboxylic Acids Using α,α-Dichlorodiphenylmethane
作者:Chang-Hee Lee、Soo-Min Lee、Byul-Hana Min、Dong-Su Kim、Chul-Ho Jun
DOI:10.1021/acs.orglett.8b00831
日期:2018.4.20
conversions of various alcohols and carboxylic acids to their corresponding alkyl and acyl chlorides in high yields under mild conditions. Particulary interesting is the observation that the respective alkyl bromides and iodides can be generated from alcohols when either LiBr or LiI are present in the reaction mixtures.