Amid(e) them all: Primarycarboxamides and ureas react with aromatic and aliphatic amines in the presence of a copper catalyst to give a wide range of functionalized amides (see scheme).
Highly efficient and enantioselective enzymatic acylation of amines in aqueous medium
作者:Dorel T Guranda、Luuk M van Langen、Fred van Rantwijk、Roger A Sheldon、Vytas K Švedas
DOI:10.1016/s0957-4166(01)00263-4
日期:2001.7
unique catalytic properties, stability and enantioselectivity of the relatively unknown penicillin acylase from Alcaligenesfaecalis has been developed for the effective and enantioselective acylation of amines in aqueousmedium. In contrast to lipase-catalyzed acylations in organic solvents, the penicillin acylase-catalyzed acylation of amines in aqueous solution is a rapid and chemoselective process
C−H activations with challenging arylacetamides were accomplished by versatile ruthenium(II) biscarboxylate catalysis. The distal C−H functionalization offers ample scope—including twofold oxidative C−H functionalizations and alkyne hydroarylations—through facile base‐assisted internal electrophilic‐type substitution (BIES) C−H ruthenation by weakO‐coordination.
具有挑战性的芳基乙酰胺的CH活化是通过通用的双羧酸钌(II)催化完成的。远端C H功能化提供了广泛的范围-包括双重的氧化C H H功能化和炔烃加氢芳基化-通过弱O配位通过碱辅助的内部亲电子型取代(BIES)CH H钌化。
Catalytic Chemical Amide Synthesis at Room Temperature: One More Step Toward Peptide Synthesis
作者:Tharwat Mohy El Dine、William Erb、Yohann Berhault、Jacques Rouden、Jérôme Blanchet
DOI:10.1021/acs.joc.5b00378
日期:2015.5.1
An efficient method has been developed for direct amide bond synthesis between carboxylic acids and amines via (2-(thiophen-2-ylmethyl)phenyl)boronic acid as a highly active bench-stable catalyst. This catalyst was found to be very effective at room temperature for a large range of substrates with slightly higher temperatures required for challenging ones. This methodology can be applied to aliphatic
Direct Synthesis of Amides from Carboxylic Acids and Amines Using B(OCH<sub>2</sub>CF<sub>3</sub>)<sub>3</sub>
作者:Rachel M. Lanigan、Pavel Starkov、Tom D. Sheppard
DOI:10.1021/jo400509n
日期:2013.5.3
range of amines. In most cases, the amide products can be purified by a simple filtration procedure using commercially available resins, with no need for aqueous workup or chromatography. The amidation of N-protected amino acids with both primary and secondary amines proceeds effectively, with very low levels of racemization. B(OCH2CF3)3 can also be used for the formylation of a range of amines in good