Ring Opening of Pymisyl‐Protected Aziridines with Organocuprates
作者:Jan Bornholdt、Jakob Felding、Rasmus P. Clausen、Jesper L. Kristensen
DOI:10.1002/chem.201001026
日期:2010.11.2
The pyrimidine‐2‐sulfonyl (pymisyl) group is introduced as a new protecting group that can be used to activate aziridines towards ringopening. It is readily introduced and removed under mild conditions. Regioselective ringopening of pymisyl‐protected 2‐methyl‐aziridine with organocuprates gives the corresponding sulfonamides in high yields, and the pymisyl group can subsequently be removed upon treatment
A copper-catalyzed cross-coupling of heterocyclic thiols with aryliodides is reported. The reaction was carried out in the presence of CuI (5 mol %), 1,10-phenanthroline (10 mol %) and K2CO3 (1.3 equiv) in DMF at 120 °C. A variety of heterocyclic sulfides were prepared in high selectivities and yields.
据报道,铜催化的杂环硫醇与芳基碘化物的交叉偶联。反应在120℃下在CuI(5mol%),1,10-菲咯啉(10mol%)和K 2 CO 3(1.3当量)的存在下在DMF中进行。以高选择性和高产率制备了各种杂环硫化物。
Fabrication of magnetic amino-functionalized nanoparticles for S-arylation of heterocyclic thiols
作者:Yanhong Liu、Lincheng Zhou、Xinping Hui、Zhenwen Dong、Hao Zhu、Yanming Shao、Yanfeng Li
DOI:10.1039/c4ra08782h
日期:——
The aminosilane coupling agent and polyethylene imine-600 were loaded onto magnetic nanoparticles to obtain magnetic nanoligands (MNLs) A, B, C and D.