Trimethylchlorosilane-Mediated Mild α-Chlorination of 1,3-Dicarbonyl Compounds Promoted by Phenyliodonium Diacetate
作者:Yingpeng Su、Yulai Hu、Siying Chong、Lili Wu、Weigang Zhang、Junyan Ma、Xiaowei Chen、Danfeng Huang、Ke-Hu Wang
DOI:10.1055/s-0035-1561572
日期:——
Abstract Trimethylchlorosilane was used as chlorine source for the α-chlorination of 1,3-dicarbonyl compounds with phenyliodonium diacetate as oxidant at room temperature. The reaction allows the selective synthesis of α-monochlorinated products from different kinds of 1,3-dicarbonyl compounds in good yield. The potential possibility of this conversion for bromination has also been investigated. T
decompose in the 350–450°C temperature range. IR data suggest inequivalence of the two CO bonds in each of the coordinated ligands. The four bands were assigned to Al-O vibration on the basis of the metal effect.
BICYCLIC HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF THE PAR-2 SIGNALING PATHWAY
申请人:VERTEX PHARMACEUTICALS INCORPORATED
公开号:US20180057505A1
公开(公告)日:2018-03-01
The compounds of formula I, wherein the variables are as defined herein, and pharmaceutically acceptable salts thereof are useful as inhibitors of the PAR-2 signaling pathway. The compounds of formula I and pharmaceutically acceptable compositions comprising such compounds can be employed for treating various diseases, disorders, and conditions.
Iridium(III)-Catalyzed C−H Functionalization of Triarylphosphine Oxides with Diazo Dicarbonyl Compounds: Synthesis of α-Aryl 1,3-Dicarbonyl Derivatives
作者:Shang-Dong Yang、Qin-Xin Lou、Jing-Yu Li
DOI:10.1055/a-1409-1906
日期:2021.8
A novel (pentamethylcyclopenta-1,3-dienyl)iridium(III)-catalyzed direct C–H functionalization of triarylphosphine oxides with diazo dicarbonyl compounds through carbene insertion has been developed. This strategy provides a simple and efficientroute to the construction of α-arylated 1,3-dicarbonyl compounds, which are important building blocks in pharmaceutical chemistry.