Propanephosphonic Acid Anhydride–Mediated Cyclodehydration of Maleic Acid Monoamides
摘要:
Propanephosphonic acid anhydride (T3P) has been proposed as a novel reagent for the preparation of maleic acid isoimides from the corresponding monoamides. A series of substituted aromatic and aliphatic isoimides have been prepared in good yields. The main advantage of this synthetic method is the use of environmentally benign, cost-efficient reagents and solvents, which are also safer to handle than the ones employed previously. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
Spiro-?-lactame durch [2+2]-Cycloaddition von Ketenen an Iminolactone
作者:Martin Roth
DOI:10.1002/hlca.19790620625
日期:1979.9.19
Spiro-β-lactams from [2+2]-Cycloaddition of Ketenes to Iminolactones
酮基的[2 + 2]-环加成反应成氨基内酯的螺-β-内酰胺
Propanephosphonic Acid Anhydride–Mediated Cyclodehydration of Maleic Acid Monoamides
作者:Igors Klimenkovs、Eduards Bakis、Anda Priksane
DOI:10.1080/00397911.2012.727060
日期:2013.10.2
Propanephosphonic acid anhydride (T3P) has been proposed as a novel reagent for the preparation of maleic acid isoimides from the corresponding monoamides. A series of substituted aromatic and aliphatic isoimides have been prepared in good yields. The main advantage of this synthetic method is the use of environmentally benign, cost-efficient reagents and solvents, which are also safer to handle than the ones employed previously. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
A Mechanism for the N,N′-Dicyclohexylcarbodiimide-Caused Dehydration of Asparagine and Maleamic Acid Derivatives