Regioselective (phenylcarbamoyl)ation of polyhydroxy compounds by phenyl isocyanate-zinc naphthenate
作者:Shigeyoshi Nishino、Yoshiharu Ishido
DOI:10.1016/s0008-6215(00)90142-3
日期:1986.11
In the presence of zinc naphthenate as the catalyst, the reaction of phenyl isocyanate with 1,2-propanediol and 3,4-O-isopropylidene-d-mannitol gave the primary phenylcarbamates in high yield. 1,2,6-Hexanetriol was selectively phenylcarbamoylated at O-1, and N6-benzyladenosine at O-2′. The common methyl aldohexo- and aldopento-pyranosides gave the 3-mono(phenylcarbamate)s in fair to excellent yields
A Metal‐Free Synthesis of N‐Aryl Carbamates under Ambient Conditions
作者:Wusheng Guo、Joan Gónzalez‐Fabra、Nuno A. G. Bandeira、Carles Bo、Arjan W. Kleij
DOI:10.1002/anie.201504956
日期:2015.9.28
site‐selective process for the formation of N‐aryl‐carbamates from cyclic organic carbonates and aromatic amines is reported. The reactions proceed smoothly under extremely mild reaction conditions using TBD (triazabicyclodecene) as an effective and cheap organocatalyst, thus providing a sustainable and new methodology for the formation of a wide variety of useful N‐arylcarbamate synthons in good to excellent yields
CO<sub>2</sub> activation and fixation: highly efficient syntheses of hydroxy carbamates over Au/Fe<sub>2</sub>O<sub>3</sub>
作者:Jianpeng Shang、Xiaoguang Guo、Zuopeng Li、Youquan Deng
DOI:10.1039/c5gc02772a
日期:——
An effective route for the syntheses of hydroxyl carbamates from CO2, epoxides and amines over Au/Fe2O3 was developed. Such a process could fulfill the optimum utilization of CO2, which is of significance from the standpoint of green chemistry and sustainable development.
提出了一种在Au / Fe 2 O 3上由CO 2,环氧化物和胺合成氨基甲酸羟基酯的有效途径。这样的过程可以实现CO 2的最佳利用,这从绿色化学和可持续发展的角度来看具有重要意义。