An Improved Synthesis of Polyfunctional Acyl Azides in PEG 400
作者:Khalid Widyan
DOI:10.1080/00304948.2020.1862029
日期:2021.3.4
(2021). An Improved Synthesis of Polyfunctional Acyl Azides in PEG 400. Organic Preparations and Procedures International: Vol. 53, No. 2, pp. 120-126.
(2021年)。PEG 400中多官能酰基叠氮化物的改进合成。53,第2号,第120-126页。
A mild and efficient method for the preparation of acyl azides from carboxylic acids using triphosgene
作者:V.K. Gumaste、B.M. Bhawal、A.R.A.S. Deshmukh
DOI:10.1016/s0040-4039(01)02377-2
日期:2002.2
An efficient use of triphosgene for the preparation of various acyl azides from carboxylic acids and sodium azide is described.
provides facile access to acyl ureas. In addition, a mechanistic study was carried out by both experiment and DFT calculation. Control experiments and kinetic study revealed that the real activepalladiumspecies were Pd(0). The result of kinetic study suggested that palladium catalyst, azide, and CO were all involved in the turnover-limiting step except for amine. Further DFT study suggested that an
Acyl azides were directly synthesized from carboxylic acids by the treatment with 2-azido-1,3-dimethylimidazolinium chloride (ADMC, 1) and amine. This procedure resulted in acyl azides in good yiel...
[image omitted] Catalyzed by ferric chloride hexahydrate (FeCl3 center dot 6H2O), the acylation of sodium azide with N-acylbenzotriazoles was greatly accelerated in a mixed solvent of acetone and water. Thus, good to excellent yields of a variety of acyl azides were obtained at room temperature in a short time. Furthermore, because of the complete conversion of N-acylbenzotriazoles and the easy removal of the by-product, purification by column chromatography was no longer required, which made the protocol suitable for large-scale preparation.