Copper-Catalysed (Diacetoxyiodo)benzene-Promoted Aerobic Esterification Reaction: Synthesis of Oxamates from Acetoacetamides
作者:Zhiguo Zhang、Xiaolong Gao、Haifeng Yu、Guisheng Zhang、Jianming Liu
DOI:10.1002/adsc.201800616
日期:2018.9.3
A copper‐catalysed (diacetoxyiodo)benzene‐promoted aerobic esterification reaction of acetoacetamides was developed for the synthesis of oxamates, which are useful precursors in synthetic organic chemistry. This practical and mild synthetic approach proceeded at 25 °C under open‐air conditions and afforded methyl 2‐oxo‐2‐(phenylamino)acetates in good to excellent yields combined with C−C σ‐bond cleavage
Novel syntheses of oxamides, oxamates and oxalates from diisopropenyl oxalate
作者:Muriel Neveux、Christian Bruneau、Serge Lécolier、Pierre H. Dixneuf
DOI:10.1016/s0040-4020(01)86342-0
日期:1993.3
Diisopropenyl oxalate, obtained by catalytic addition of oxalic acid to propyne, is a useful reagent for the access to a variety of α-dicarbonyl compounds such as oxamides, oxamates and oxalates, under very mild conditions.
A Novel [2 + 3] Cycloaddition Reaction: Singlet Oxygen Mediated Formation of 1,3-Dipole from Iminodiacetic Acid Dimethyl Ester and Its Addition to Maleimides
作者:Hao Cheng、Liangbing Gan、Yaru Shi、Xiaolan Wei
DOI:10.1021/jo015749m
日期:2001.9.1
methyl ester and maleimides follows a [2 + 3] cycloaddition pathway yielding pyrrolidine derivatives. This is similar to the photochemical reaction between C(60) and amines. A series of pyrrolidine derivatives are prepared by the method including multipyrrolidines from bis- and tris-maleimide starting materials. The yields range from 13% to 85%. The reaction is highly stereoselective. All the isolated
Carboxylic acid amides of formula (II): ##STR1## where R.sup.1 and R.sup.2 represent a variety of hydrocarbon or heterocyclic groups, possess antibacterial activity and antimycoplasmal activity and are therefore of value in the treatment of human and veterinary bacterial and mycoplasmal infections.
Réactions d'élimination présentées par des acides polyhydroxyadipiques
作者:A. Gabbai、Th. Posternak
DOI:10.1002/hlca.19710540603
日期:——
The tetrahydroxyadipic acids and one trihydroxyadipic acid have been methylated, using methyl iodide and silver oxide in the presence of dimethylformamide.