Hydropyridylation of Olefins by Intramolecular Minisci Reaction
作者:Samuele Bordi、Jeremy T. Starr
DOI:10.1021/acs.orglett.7b00833
日期:2017.5.5
methodology for an intramolecular Minisci reaction based on a hydrogen atom transfer (HAT) initiated hydrofunctionalization of olefins was developed. The method is suitable for the construction of unusual dihydropyrano-pyridine and 1,2,3,4-tetrahydronaphthiridine structures and, unlike most similar reactions, does not require exclusion of air from the reaction medium.
We report herein a rare‐earth‐metal‐catalyzed insertion of a 2‐pyridineC(sp2)−H bond into an intramolecular unactivated vinyl bond. This reaction provides streamlined access to a range of azaindolines in moderate to excellent yields. The salient features of this reaction include simple and mild reaction conditions, 100% atom efficiency, and wide substrate scope. This methodology is also used to construct
A general method for the deoxygenation of aromatic N-oxides using RuCl3·xH2O
作者:Sanjay Kumar、Anil Saini、Jagir S. Sandhu
DOI:10.1016/j.tetlet.2005.10.047
日期:2005.12
An efficient, simple and selective method for the deoxygenation of aromatic N-oxides, such as N-arylnitrones, azoxybenzenes, N-heteroarene N-oxides using ruthenium(III) chloride to afford deoxygenated products in excellent yields, is described.
The invention provides nicotine receptor agonists of formula I:
1
wherein R
1
, x, y, and n have any of the values given in the specification, or a pharmaceutically acceptable salt thereof, as well as pharmaceutical compositions comprising such a compound or salt, methods for preparing such a compound or salt, and methods for modulating (e.g. antagonizing or activating) nicotine receptors with such a compound or salt.