Regioselective Copper-Catalyzed C-N and C-S Bond Formation Using Amines, Thiols and Halobenzoic Acids
作者:Christian Wolf、Shuanglong Liu、John Pestano
DOI:10.1055/s-2007-990875
日期:2007.11
Cu/Cu(2)O-catalyzed reaction is carried out in 2-ethoxyethanol or ethylene glycol diethyl ether and does not require the use of strong base or other additives. This procedure eliminates the need for acid protection, tolerates a wide range of functional groups and provides aromatic and aliphatic amines and sulfides in 81 to 99% yield.
Metal-free direct C(sp3)−H functionalization of 2-alkylthiobenzoic acid to access 1,3-benzooxathiin-4-one
作者:Ke Yang、Yi Li、Mengjie Song、Shengfei Dai、Zheng-Yi Li、Xiaoqiang Sun
DOI:10.1016/j.cclet.2020.11.036
日期:2021.1
Abstract Metal-free direct α-C(sp3)–H intramolecular cyclization of 2-alkylthiobenzoic acid in the presence of Selectfluor is described. This novel strategy provides a facile and efficient method to access important 1,3-benzooxathiin-4-one derivatives with good functional groups tolerance and yields.
previously reported S-trityl-l-cysteine derivatives as selective KSP inhibitors. Here, we report further optimizations using docking modeling in the L5 allosteric binding site, which led to the discovery of several high affinity derivatives with two fused phenyl rings in the trityl group giving low nanomolar range KSP ATPase inhibition. The representative derivatives potently inhibited cell growth of HCT116