DIPHENYLOXYALKYLAMINE DERIVATIVES AND ARYLOXYALKYLAMINE DERIVATIVES, PHARMACEUTICAL COMPOSITION, USE OF SAID PHARMACEUTICAL COMPOSITION FOR TREATING, PREVENTING OR INHIBITING CHRONIC PULMONARY INFLAMMATORY DISEASES AND METHOD FOR TREATING OR PREVENTING SUCH DISEASES
Selective C(sp3)-C(sp2) bond construction is of central interest in chemical synthesis. Despite the success of classic cross-coupling reactions, the cross-dehydrogenative coupling between inert C(sp3)-H and C(sp2)-H bonds represents an attractive alternative toward new C(sp3)-C(sp2) bonds. Herein, we establish a selective inter- and intramolecular C(sp3)-H arylation of alcohols with nondirected arenes
Linear Free Energy Correlation Analysis on the Electronic Effects of Rh(II) Carbene O−H Insertion
作者:Zhaohui Qu、Weifeng Shi、Jianbo Wang
DOI:10.1021/jo0350312
日期:2004.1.1
The relative rate constants for the Rh(II)-catalyzed insertion of diazoacetone into the O−H bond have been measured through intermolecular competitions. The kinetic data were subjected to Hammett correlation analysis, and mechanistic implication of the results with respect to a stepwise vs a concerted O−H insertion pathway is discussed.
3-Amino-chromanes and Tetrahydroquinolines as Selective 5-HT<sub>2B</sub>, 5-HT<sub>7</sub>, or σ<sub>1</sub> Receptor Ligands
作者:Matthew R. Porter、Haiyan Xiao、Jing Wang、Sylvia B. Smith、Joseph J. Topczewski
DOI:10.1021/acsmedchemlett.9b00225
日期:2019.10.10
variety of G protein-coupled receptor (GPCR) ligands. This includes both endogenous neurotransmitters and active pharmaceutical agents. More than 20 structurally unique heterocyclic phenethylamine derivatives were broadly evaluated for GPCR affinity. Selective ligands for the 5-HT2B, 5-HT7, and σ1 receptors were identified, each with low nanomolar binding affinities. The σ1 receptor affinity was supported
Although intramolecular hydroarylation is an attractive transformation of allylic aryl ethers, it has suffered from narrow substrate scope. We herein describe Ir/(S)-DTBM-SEGPHOS-catalyzed intramolecular hydroarylation of allylic aryl ethers. The reaction eliminates the structural requirement from the aryl group, affording 2,3-dihydrobenzofurans bearing a stereogenic carbon center at the C3 position
尽管分子内加氢芳基化是烯丙基芳基醚的一种有吸引力的转化,但它的底物范围狭窄。我们在此描述了 Ir/( S )-DTBM-SEGPHOS 催化的烯丙基芳基醚的分子内加氢芳基化。该反应消除了芳基的结构要求,提供了在 C3 位置带有立体碳中心的 2,3-二氢苯并呋喃,对映体过量高达 99%。
Formation of Ketones from Alkyl Nitrites in the Solid State
Alkyl nitrites selectively afforded the corresponding ketones upon photoirradiation in the solid state. It was suggested by the X-ray crystallographic analysis that the cavity in crystal and the initial conformation of the nitroso group had an influence on the yield of the ketones.