Efficient and Direct Nucleophilic Difluoromethylation of Carbonyl Compounds and Imines with Me<sub>3</sub>SiCF<sub>2</sub>H at Ambient or Low Temperature
作者:Yanchuan Zhao、Weizhou Huang、Ji Zheng、Jinbo Hu
DOI:10.1021/ol202208b
日期:2011.10.7
by using a proper Lewis base activator, Me3SiCF2H can efficiently difluoromethylate various aldehydes, ketones, and imines to give the corresponding products in good to excellent yields at room temperature or even at −78 °C.
TRIAZOLE CARBAMATE PYRIDYL SULFONAMIDES AS LPA RECEPTOR ANTAGONISTS AND USES THEREOF
申请人:Gilead Sciences, Inc.
公开号:US20210171500A1
公开(公告)日:2021-06-10
The present disclosure relates generally to compounds that bind to Lysophosphatidic Acid Receptor 1 (LPAR1) and act as antagonists of LPAR1. The disclosure further relates to the use of the compounds for the preparation of a medicament for the treatment of diseases and/or conditions through binding of LPAR1, including fibrosis and liver diseases such as non-alcoholic steatohepatitis (NASH).
Organocatalytic direct difluoromethylation of aldehydes and ketones with TMSCF<sub>2</sub>H
作者:Guang-Fen Du、Ying Wang、Cheng-Zhi Gu、Bin Dai、Lin He
DOI:10.1039/c5ra04472c
日期:——
Organocatalytic direct difluoromethylation of aldehydes and ketones with TMSCF2H.
有机催化剂直接用TMSCF2H对醛和酮进行二氟甲基化。
Visible light-promoted umpolung coupling of aryl tri-/difluoroethanones with 2-alkenylpyridines
作者:Xiao Xu、Qing-Qiang Min、Na Li、Feng Liu
DOI:10.1039/c8cc06748a
日期:——
Tertiaryalcohols bearing a trifluoromethyl group are of considerable medicinal interest. Using an umpolung strategy, we herein report the first intermolecular reductive cross-coupling of aryl tri-/difluoroethanones with 2-alkenylpyridines with the aid of a Brønsted acid catalyst upon visible-light irradiation. This metal-free reaction is operationally simple and performed at ambient temperature, allowing