Bench‐Stable
<i>S</i>
‐(Monofluoromethyl)sulfonium Salts: Highly Efficient
<i>C</i>
‐ and
<i>O</i>
‐Regioselective Monofluoromethylation of 1,3‐Dicarbonyl Compounds
作者:Wen‐Bing Qin、Jian‐Jian Liu、Zhongyan Huang、Xin Li、Wei Xiong、Jia‐Yi Chen、Guo‐Kai Liu
DOI:10.1002/ejoc.202000998
日期:2020.9.30
Novel bench‐stable S‐(monofluoromethyl)‐S‐phenyl‐S‐(2,4,6‐trialkoxyphenyl)sulfonium salts were readily prepared for C‐ and O‐regioselective monofluoromethylation of 1,3‐dicarbonyl compounds in good to excellent yields under mild reaction conditions.
The invention relates to novel triazolopyrimidines of the formula
1
wherein
X represents halogen,
Y represents a hydrogen atom or halogen, and
R has the meanings given in the disclosure,
to a process for the preparation of the new compounds, and to their use as microbicides.
The present invention provides a novel class of modified pyrimidine compounds and compositions and methods of using the compounds as glucocorticoid receptor modulators.
本发明提供了一类新型的改良嘧啶化合物,以及使用这些化合物作为糖皮质激素受体调节剂的组合物和方法。
Aryltrifluoromethylative cyclization of unactivated alkenes by the use of PhICF<sub>3</sub>Cl under catalyst-free conditions
作者:Jia Guo、Cong Xu、Xiaowei Liu、Mang Wang
DOI:10.1039/c8ob03189d
日期:——
A concise and catalyst-free aryltrifluoromethylative cyclization of unactivated alkenes has been developed herein. The use of PhICF3Cl as a powerful trifluoromethylating agent allows easy transformations. A set of trifluoroethylated carbocycles and aza-hereocycles were efficiently synthesized in good yield and selectivity. A broad substrate scope, mild reaction conditions, and easy operation would
Palladium-catalyzed three-component reaction for the synthesis of 3,3-disubstituted allylic alcohols with regio- and stereoselectivity
作者:Gang Hu、Jingtao Wang、Zefei Li、Yajing Liu、Ping Gong
DOI:10.1039/c7nj04342b
日期:——
A novel three-component assembly of allenic alcohols, aryl iodides and 1,3-dicarbonyl compounds into 3,3-disubstituted allylic alcohols was promoted in the presence of a palladium source. A plausible mechanism through Pd0 catalysis was established to explain the regio- and stereoselectivity. Various aryl iodides and functionalized dicarbonyls were well-tolerated to afford products in good to moderate