32858-84-7Relevant articles and documents
Hydroxy-Directed Amidation of Carboxylic Acid Esters Using a Tantalum Alkoxide Catalyst
Tsuji, Hiroaki,Yamamoto, Hisashi
supporting information, p. 14218 - 14221 (2016/11/13)
We describe herein a new strategy for the chemoselective synthesis of amides by using a metal-catalyzed hydroxy-directed reaction. A hydroxy group located at the β-position of an ester group promoted the activation of a carbonyl group with a tantalum alkoxide catalyst followed by amidation reactions, leading to a wide variety of β-hydroxyamides with excellent chemeselectivity. The chemoselective amidation strategy can be extended to the catalytic synthesis of dipeptide derivatives, which remains challenging research subjects in modern organic synthesis.
Iron-catalyzed oxidative addition of alkoxycarbonyl radicals to alkenes with carbazates and air
Taniguchi, Tsuyoshi,Sugiura, Yuki,Zaimoku, Hisaaki,Ishibashi, Hiroyuki
supporting information; experimental part, p. 10154 - 10157 (2011/02/24)
Clean and simple: Alkoxycarbonyl radicals generated from carbazates by iron catalysis in air underwent addition to a variety of alkenes to give the corresponding β-hydroxyesters (see scheme). The simple experimental procedure for this transformation has the added advantage that the reagents are environmentally friendly. R1,R2=alkyl, alkynyl, aryl, CO2Et; [Fe(Pc)]=iron phthalocyanine. Copyright
Iron-catalysed Reformatsky-type reactions
Durandetti, Muriel,Perichon, Jacques
, p. 1542 - 1548 (2007/10/03)
A Reformatsky-type reaction has been developed using iron catalysis in acetonitrile or DMF. Reduction of iron(II) bromide by manganese metal in acetonitrile provides a low-valent iron catalyst, which is the active species; under these conditions, α-chloro