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。
Oxidation of aromatic sulfides with molecular oxygen: Controllable synthesis of sulfoxides or sulfones
作者:Lili Tang、Kejie Du、Bing Yu、Liangnian He
DOI:10.1016/j.cclet.2020.03.030
日期:2020.12
Abstract The recent development of selective oxidation of aromaticsulfides with molecular oxygen was highlighted. The sulfoxides and sulfones could be obtained by simply switching the reaction media, i.e., bis(2-butoxyethyl)ether (BBE) or poly(ethylene glycol)dimethyl ether (pegdme). The application of the high-boiling-point polyether as an initiator and green media can eliminate the need of large
Selective oxidation of (hetero)sulfides with molecular oxygen under clean conditions
作者:Kai-Jian Liu、Ji-Hui Deng、Jie Yang、Shao-Feng Gong、Ying-Wu Lin、Jun-Yi He、Zhong Cao、Wei-Min He
DOI:10.1039/c9gc03713f
日期:——
into distinct high-value products is a particularly attractive concept and a daunting synthetic challenge. In the present work, the first example of efficient and selectiveoxidation of sulfides to sulfones and sulfoxides using molecularoxygen under clean conditions was established.
[EN] 2,3'-BIPYRIDINES DERIVATIVES AS SELECTIVE COX-2 INHIBITORS<br/>[FR] DERIVES DE 2,3'-BIPYRIDINES SERVANT D'INHIBITEURS DE COX-2 SELECTIFS
申请人:ALMIRALL PRODESFARMA SA
公开号:WO2004072037A1
公开(公告)日:2004-08-26
The present invention relates to 2,3'-bipyridines of formula (I). Processes for their preparation, pharmaceutical compositions containing them, and their medical uses.
A general method for the synthesis of aryl [11C]methylsulfones: Potential PET probes for imaging cyclooxygenase-2 expression
作者:Vattoly J. Majo、Jaya Prabhakaran、Norman R. Simpson、Ronald L. Van Heertum、J. John Mann、J.S. Dileep Kumar
DOI:10.1016/j.bmcl.2005.06.080
日期:2005.10
methylsulfone group. The potential of this methodology has been demonstrated by the successful radiosynthesis of carbon-11 analogues of several highly selective cyclooxygenase-2 (COX-2) inhibitors such as Rofecoxib, Etoricoxib, and 3-(4-methylsulfonylphenyl)-4-phenyl-5-trifluoromethyl isoxazole in high yield. The chemical and radiochemical purities obtained for the 11C-labeled COX-2 inhibitors are >99%
已经开发了一种通用的一锅法,用于将被掩蔽为丁酸酯的芳基硫醇部分转化为相应的11C-标记的甲基砜基团。这种方法的潜力已通过成功放射性合成几种高选择性环氧合酶2(COX-2)抑制剂(如罗非考昔,依托昔布和3-(4-甲基磺酰基苯基)-4-苯基-5)的11碳类似物得到了证明。 -三氟甲基异恶唑,收率高。11C标记的COX-2抑制剂获得的化学和放射化学纯度> 99%,比活度> 1000 Ci / mmol。