2311-21-9Relevant articles and documents
A simple and convenient synthesis of N-formyl amino acid esters under mild conditions
Duczek,Deutsch,Vieth,Niclas
, p. 37 - 38 (1996)
A variety of amino acid ester hydrochlorides react with cyanomethyl formate at room temperature to give the N-formyl amino acid esters in good yields and without racemization.
Capsicum annuum fruit extract: A novel reducing agent for the green synthesis of zno nanoparticles and their multifunctional applications
Lalithamba, Haraluru Shankraiah,Raghavendra, Mahadevaiah,Uma, Kogali,Yatish, Kalanakoppal Venkatesh,Mousumi, Das,Nagendra, Govindappa
, p. 354 - 364 (2018/07/05)
A simple, efficient and convenient method for the preparation of zinc oxide (ZnO) nanoparticle was described. Several parameters like size and morphology of the prepared nanoparticles were characterized thorough a variety of analytical techniques such as
Formamide Synthesis through Borinic Acid Catalysed Transamidation under Mild Conditions
Mohy El Dine, Tharwat,Evans, David,Rouden, Jacques,Blanchet, Jér?me
supporting information, p. 5894 - 5898 (2016/04/26)
A highly efficient and mild transamidation of amides with amines co-catalysed by borinic acid and acetic acid has been reported. A wide range of functionalised formamides was synthesized in excellent yields, including important chiral α-amino acid derivatives, with minor racemisation being observed. Experiments suggested that the reaction rely on a cooperative catalysis involving an enhanced boron-derived Lewis acidity rather than an improved Br?nsted acidity of acetic acid. Amide bonds are reputedly difficult to activate due to their high resonance stabilization. An unusual mild activation of dimethylformamide and formamide by borinic acid 1 (see scheme), illustrated by a general formylation of a wide range of amines, including chiral α-amino esters, has been reported.
Transamidation of carboxamides catalyzed by Fe(III) and water
Becerra-Figueroa, Liliana,Ojeda-Porras, Andrea,Gamba-Sánchez, Diego
, p. 4544 - 4552 (2014/06/09)
The highly efficient transamidation of several primary, secondary, and tertiary amides with aliphatic and aromatic amines (primary and secondary) is described. The reaction is performed in the presence of a 5 mol % concentration of different hydrated salts of Fe(III), and the results show that the presence of water is crucial. The methodology was also applied to urea and phthalimide to demonstrate its versatility and wide substrate scope. An example of its use is an intramolecular application in the synthesis of 2,3-dihydro-5H-benzo[b]-1,4- thiazepin-4-one, which is the bicyclic core of diltiazem and structurally related drugs (Budriesi, R.; Cosimelli, B.; Ioan, P.; Carosati, E.; Ugenti, M. P.; Spisani, R. Curr. Med. Chem. 2007, 14, 279-287). A plausible mechanism that explains the role of water is proposed on the basis of experimental observations and previous mechanistic suggestions for transamidation reactions catalyzed by transition metals such as copper and aluminum. This methodology represents a significant improvement over other existing methods; it can be performed in air and with wet or technical grade solvents.