Air- and Light-Stable <i>S</i>-(Difluoromethyl)sulfonium Salts: <i>C</i>-Selective Electrophilic Difluoromethylation of β-Ketoesters and Malonates
作者:Sheng-Le Lu、Xin Li、Wen-Bing Qin、Jian-Jian Liu、Yi-Yong Huang、Henry N. C. Wong、Guo-Kai Liu
DOI:10.1021/acs.orglett.8b03067
日期:2018.11.2
Air- and light-stable electrophilic difluoromethylating reagents, S-(difluoromethyl)-S-phenyl-S-(2,4,6-trialkoxyphenyl) sulfonium salts were successfully developed, and the introduction of intramolecular hydrogen bonds plays a crucial role for the stabilities and reactivities of these reagents. C-selective difluoromethylation of a broad range of β-ketoesters and malonates proceeded smoothly under mild
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.
[EN] KRAS G12C INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS DE KRAS G12C ET LEURS UTILISATIONS
申请人:CALIFORNIA INST OF TECHN
公开号:WO2020236940A1
公开(公告)日:2020-11-26
The invention relates to compounds of Formula I, and pharmaceutically acceptable salts thereof, and methods of making and using the same. The compounds of the invention are effective in inhibiting KRAS protein with a G12C mutation and are suitable for use in methods of treating cancers mediated, in whole or in part, by KRAS G12C mutation.
Sterically Demanding Unsymmetrical Diaryl-λ<sup>3</sup>-iodanes for Electrophilic Pentafluorophenylation and an Approach to α-Pentafluorophenyl Carbonyl Compounds with an All-Carbon Stereocenter
A stericallydemandingunsymmetrical pentafluorophenyl‐triisopropylphenyl‐λ3‐iodane was developed as an effective reagent for the electrophilicpentafluorophenylation of various β‐keto esters and a β‐keto amide. 17 examples of α‐pentafluorophenylated 1,3‐dicarbonyl compounds 3 having a quaternary carbon center are provided. The resulting compounds were nicely transformed into chiral α‐pentafluorophenyl
Asymmetric synthesis of all-carbon quaternary spirocycles via a catalytic enantioselective allylic alkylation strategy
作者:Samantha E. Shockley、J. Caleb Hethcox、Brian M. Stoltz
DOI:10.1016/j.tetlet.2017.07.022
日期:2017.8
moiety spanning an all-carbon quaternary stereogenic spirocenter was achieved using a masked bromomethyl vinyl ketone reagent. The developed protocol entails an enantioselective palladium-catalyzed allylic alkylationreaction followed by a one-pot unmasking/RCM sequence that provides access to the spirocyclic compounds in good yields and selectivities.