在此,我们提出了一种炔丙基氨基甲酸酯环异构化的操作简单协议,其中使用了由固定在氨基官能化硅质介孔泡沫(Pd II -AmP-MCF)上的Pd组成的非均相催化剂。这种Pd纳米催化剂在较低的催化剂负载量和反应温度下显示出高效率,从而可以高效,温和地合成各种1,3-恶唑烷酮-2-酮衍生物和相关化合物。此外,尽管在随后的循环中观察到活性逐渐下降,但事实证明,可以将Pd纳米催化剂再用于一些反应。
Palladium-Catalyzed Intramolecular Hydroamination of Propargylic Carbamates and Carbamothioates
作者:Santosh Kumar Alamsetti、Andreas K. Å. Persson、Jan-E. Bäckvall
DOI:10.1021/ol5002279
日期:2014.3.7
An efficient and simple methodology was developed for the synthesis of oxazolidinones, oxazolidinthiones, imidazolidinthiones, and imidazolidinones from the corresponding propargylic starting materials using Pd(OAc)2 and n-Bu4NOAc as catalysts in DCE at room temperature.
开发了一种有效且简单的方法,用于在室温下在DCE中使用Pd(OAc)2和n- Bu 4 NOAc作为催化剂,从相应的炔丙基原料合成恶唑烷酮,恶唑烷硫酮,咪唑烷硫酮和咪唑烷酮。
Synthesis of N-substituted-4-methylene-oxazolidinones via base-catalyzed cyclization of propargylic alcohols with p-toluenesulfonyl isocyanate
作者:Shao-Feng Pi、Yue-Meng Guo、Zheng-Rui Zhou、Han-zhou Sun、Bing Yi
DOI:10.1177/1747519820907304
日期:2020.9
A practical method is developed for the synthesis of oxazolidinone derivatives, an important class of heterocyclic compounds. The effect of bases and solvents on this cyclization reaction is discussed and a simple new base–solvent system (triethylamine in toluene) is found to be the most effective. The reaction conditions developed here are mild and no by-products are observed. Moreover, using optimized
Ruthenium Complex-Catalyzed Domino Addition/<i>exo</i>- Cycloisomerization of Propargylic Alcohols and Tosyl Isocyanate to Form Oxazolidinones
作者:Deng Yuan Li、Hao Jie Chen、Pei Nian Liu
DOI:10.1002/adsc.201401039
日期:2015.4.13
for dominoaddition/exo‐cycloisomerization of propargylic alcohols and tosyl isocyanate. In the presence of 2–5 mol% ruthenium complex, a range of terminal propargylic alcohols were reacted with tosyl isocyanate to furnish the corresponding oxazolidinone product exclusively in moderate to excellent yields. Mechanistic studies suggest that propargylic alcohol and tosyl isocyanate undergo addition firstly
Copper-catalyzed domino cyclization of propargylic alcohol with tosyl isocyanate to oxazolidinones
作者:Xiu-Shuai Chen、Chuan-Jin Hou、Yan-Jun Liu、Rui-Feng Yang、Xiang-Ping Hu
DOI:10.1080/00397911.2016.1258475
日期:2017.1.17
A copper-catalyzed domino cyclization of propargylic alcohols with tosyl isocyanate for the synthesis of oxazolidinones has been developed. Various propargylic alcohols with an aryl or alkyl substituents worked smoothly to afford the corresponding oxazolidinones in moderate to excellent yields.[GRAPHICS].