late-stage oxygenation of sulfur-containing complex molecules with ground-stateoxygen under ambient conditions. The high oxidation potential of the active uranyl cation (UO2 2+ ) enabled the efficient synthesis of sulfones. The ligand-to-metal charge transfer process (LMCT) from O 2p to U 5f within the O=U=O group, which generates a UV center and an oxygen radical, is assumed to be affected by the solvent
氧合是合成中的基本转变。在这里,我们描述了在环境条件下用基态氧对含硫配合物分子的选择性后期氧合。活性铀酰阳离子(UO2 2+)的高氧化势使砜的有效合成成为可能。假设O = U = O组中从O 2p到U 5f的配体到金属的电荷转移过程(LMCT)会产生UV中心和一个氧自由基,并且受溶剂和添加剂的影响,并且可以调整以促进选择性硫氧化。这种可调策略可以通过后期氧合以原子和步长高效的方式分批合成32种药物和类似物。
Regioselective and oxidant-free sulfinylation of indoles and pyrroles with sulfinamides
time-controlled highly selective C3- or C2-sulfinylation of pyrroles with sulfinamides is reported for the first time. The sulfinylation of indoles with sulfinamides using this protocol is oxidant-free and can be performed under obviously more feasible conditions (1.2 equiv. of indoles, 10 min) in comparison with the precedent procedure (3–20 equiv. of indoles, 16–18 h, ammonium persulfate as oxidant, hv). A
DMSO‐TsCl is developed for methylthiolation of various heteroarenes including pyrroles, furans, thiophenes and indoles under facile conditions. This protocol features scalable, general applicability of substrates and moderate to excellent yields. An acceptable mechanism is proposed, two of the key intermediates of proposed mechanism are detected by HRMS. Further applications of this method were also