作者:William I. Nicholson、Fabien Barreteau、Jamie A. Leitch、Riley Payne、Ian Priestley、Edouard Godineau、Claudio Battilocchio、Duncan L. Browne
DOI:10.1002/anie.202106412
日期:2021.9.27
The direct mechanochemical amidation of esters by ball milling is described. The operationally simple procedure requires an ester, an amine, and substoichiometric KOtBu and was used to prepare a large and diverse library of 78 amide structures with modest to excellent efficiency. Heteroaromatic and heterocyclic components are specifically shown to be amenable to this mechanochemical protocol. This
Dehydrogenative amide synthesis from alcohol and amine catalyzed by hydrotalcite-supported gold nanoparticles
作者:Jiangling Zhu、Yan Zhang、Feng Shi、Youquan Deng
DOI:10.1016/j.tetlet.2012.04.048
日期:2012.6
Hydrotalcite-supported nano-gold (Au/HT) was found to be a highly efficient heterogeneous catalyst for the dehydrogenative synthesis of amidefromalcohol and amine. Amines and alcohols with different structures could be converted into the amides under mild reaction conditions with up to 98% isolated yields. Mechanism exploration suggested that ester might be the reaction intermediate.
A direct C–H bond arylation method for thienyl thioamides catalyzed by [Pd(phen)2](PF6)2 was developed. This reaction selectively afforded 2-monoarylated products, while the corresponding amide thiophenederivatives furnished 2,5-diarylated products. Mechanisticstudies revealed that a Pd(II)–bisthioamide complex should be the active species for the reaction of thienyl thioamides in the presence of
Process for 5-aroylation of 1,2-dihydro-3H-pyrrolo(1,2-a)pyrrole-1-carboxylic esters and nitriles
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0053021A2
公开(公告)日:1982-06-02
A process for 5-aroylation of 1,2-dihydro-3H-pyrrolo [1,2-a]pyrrole-1-carboxylic esters and nitriles by reacting a pyrrolo pyrrole
with an aroyl morpholide
and an inorganic acid chloride in an inert aprotic solvent; followed by treatment with weak or strong base to form:
The nitrile (V) can be hydrolyzed to the acid (III).