We report the first terminal trifluoromethylation at aryl and alkyl ketones’ γ, δ, ε, or more remote sites via the selective C–C bond cleavage of cycloalkanols. The noncovalent interactions between alcohols and hypervalent iodines(III) reagents were disclosed to activate both alcohols and the Togni I reagent in the dual photoredox/copper catalysis for the transformation. This reaction was scalable
我们报告了通过环烷醇的选择性 C-C 键断裂在芳基和烷基酮的 γ、δ、ε 或更远的位点发生的第一个末端三氟甲基化。公开了醇和高价碘 (III) 试剂之间的非共价相互作用,以在双光氧化还原/铜催化转化中激活醇和 Togni I 试剂。该反应可扩展到克级合成,适用于结构复杂的类固醇三氟甲基化,并可扩展到五氟乙基化。
2,3-DIHYDRO-1H-INDENE-2-YL UREA DERIVATIVE AND PHARMACEUTICAL APPLICATION OF SAME
申请人:Kaneko Hiroaki
公开号:US20120184735A1
公开(公告)日:2012-07-19
A 2,3-dihydro-1H-indene-2-yl urea derivative represented by Formula (Ia) or a pharmaceutically acceptable salt thereof:
一种2,3-二氢-1H-茚-2-基脲衍生物,由式(Ia)表示或其药学上可接受的盐:
Visible-Light-Mediated Ring-Opening Strategy for the Regiospecific Allylation/Formylation of Cycloalkanols
practical access for the modification of complex natural products. Preliminary mechanistic studies demonstrate that the key O-centered radicals mediate the sequential ring cleavage and allylation/formylation.
PREPARATION OF 4-ALKOXY-7-(TETRAHYDRO-PYRAN-4-YL)-BENZOTHIAZOL-2-YLAMINE DERIVATIVES
申请人:Spurr Paul
公开号:US20080108826A1
公开(公告)日:2008-05-08
Processes for the preparation of 4-alkoxytetrahydropyrane derivatives used in the preparation of 4-alkoxy-7-(tetrahydropyran-4-yl)-benzothiazol-2-ylamine and derivatives.
Organophotocatalytic ring opening/remote trifluoromethylselenolation of cycloalkanols
作者:Qingyao Zhang、Wanqiang Yuan、Yingbo Shi、Fei Pan
DOI:10.1016/j.tetlet.2022.153787
日期:2022.5
An organophotocatalytic ringopening/remote trifluoromethylselenolation of cycloalkanols is reported. This reaction proceeds the radical ring-opening in a photocatalytic system without metal catalysis under mild conditions, followed by the formation of the remote C(sp3)-SeCF3 bond in the presence of PhSO2SeCF3. The reaction brings out highly reactive to prepare trifluoromethylselenolated carbonyl compounds