Synthesis of Axially Chiral Styrenes through Pd‐Catalyzed Asymmetric C−H Olefination Enabled by an Amino Amide Transient Directing Group
作者:Hong Song、Ya Li、Qi‐Jun Yao、Liang Jin、Lei Liu、Yan‐Hua Liu、Bing‐Feng Shi
DOI:10.1002/anie.201915949
日期:2020.4.16
The atroposelective synthesis of axially chiral styrenes remains a formidable challenge due to their relatively lower rotational barriers compared to the biaryl atropoisomers. Herein, we describe the construction of axially chiral styrenes through PdII‐catalyzed atroposelective C−H olefination, using a bulky amino amide as a transient chiral auxiliary. Various axially chiral styrenes were produced with
deborylation–deuteration of arylboronicacids with D2O is reported. The protocol was compatible with a variety of functionalities, including halogen, alkoxy, cyano, sulfonyl, trimethylsilyl, trifluoromethoxy, alkyl, hydroxyl, freeacid, amide, and heteroaromatic rings. A wide range of deuterated products were obtained in good yields with a high level of deuteration. This method provides a green and practical
An efficient Ni/Pdcatalyzedchemoselective synthesis of 1,3,2‐benzodiazaborininones from boronic acids and anthranilamide has been developed. This protocol allows for the rapid and straightforward access to a wide range of 1,3,2‐benzodiazaborininones at roomtemperature with excellent functional group tolerance.
Rhodium-Catalyzed Atroposelective C–H Arylation of (Hetero)Arenes Using Carbene Precursors as Arylating Reagents
作者:Yun Zou、Peiyuan Wang、Lingheng Kong、Xingwei Li
DOI:10.1021/acs.orglett.2c00968
日期:2022.5.6
atroposelective synthesis of two classes of biaryls. The coupling of 3-substitutedindoles and N-sulfonyltriazoles afforded indoles with a C(2)–C chiral axis, while the arylation of 1-naphthylthioether with ortho-quinone diazide afforded chiral binaphthyls. These coupling systems proceeded under mild conditions via C–H activation and carbene insertion despite the steric hindrance of both the arenes and the carbene
NOVEL COMPOUNDS, ISOMER THEREOF, OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF AS VANILLOID RECEPTOR ANTAGONIST AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME
申请人:Woo Byoung Young
公开号:US20110152318A1
公开(公告)日:2011-06-23
This present invention relates to novel compounds, isomer thereof or pharmaceutically acceptable salts thereof as vanilloid receptor (Vanilloid Receptor 1; VR1; TRPV1) antagonist; and a pharmaceutical composition containing the same. The present invention provides a pharmaceutical composition for preventing or treating a disease such as pain, migraine, arthralgia, neuralgia, neuropathies, nerve injury, skin disorder, urinary bladder hypersensitiveness, irritable bowel syndrome, fecal urgency, a respiratory disorder, irritation of skin, eye or mucous membrane, stomach-duodenal ulcer, inflammatory diseases, ear disease, heart disease and so on.