Iron(II)-Catalyzed Intermolecular Amino-Oxygenation of Olefins through the N–O Bond Cleavage of Functionalized Hydroxylamines
作者:Deng-Fu Lu、Cheng-Liang Zhu、Zhen-Xin Jia、Hao Xu
DOI:10.1021/ja508057u
日期:2014.9.24
An iron-catalyzed diastereoselective intermolecular olefin amino-oxygenation reaction is reported, which proceeds via an iron-nitrenoid generated by the N–O bondcleavage of a functionalized hydroxylamine. In this reaction, a bench-stable hydroxylamine derivative is used as the amination reagent and oxidant. This method tolerates a range of synthetically valuable substrates that have been all incompatible
with the existing aminohydroxylation methods. It also provides valuable amino alcohol building blocks with regio- and stereochemical arrays that are complementary to known methods. A set of practical synthetic procedures for the iron-catalyzed intermolecular olefin aminohydroxylation reactions in gram scale is reported. In these transformations, a bench-stable functionalized hydroxylamine is applied
NOVEL CONDENSED PYRIDINE OR CONDENSED PYRIMIDINE DERIVATIVE, AND MEDICINAL AGENT COMPRISING SAME
申请人:Morimoto Toshiharu
公开号:US20130102621A1
公开(公告)日:2013-04-25
The present invention relates to provision of a novel compound that has an activity of promoting insulin secretion from pancreatic β cells and thus is useful as a prophylaxis and/or therapeutic agent for diseases caused by hyperglycemia such as diabetes mellitus, and
the compound represented by the following formula (1):
wherein one of A and B represents a nitrogen atom and the other represents a nitrogen atom or CR
10
, X represents an oxygen atom, a sulfur atom or —(CH
2
)n-N(R
12
)—, Y represents an oxygen atom, a sulfur atom or —N(R
13
)—, and R
1
to R
9
each represent a hydrogen atom or another substituent, or a salt thereof, or a solvate of the compound or the salt.
[EN] SUBSTITUTED DIHYDROINDENE-4-CARBOXAMIDES AND ANALOGS THEREOF, AND METHODS USING SAME<br/>[FR] DIHYDROINDÈNE-4-CARBOXAMIDES SUBSTITUÉS, LEURS ANALOGUES ET PROCÉDÉS D'UTILISATION CORRESPONDANT
申请人:ARBUTUS BIOPHARMA CORP
公开号:WO2018172852A1
公开(公告)日:2018-09-27
The present invention includes novel substituted bicyclic compounds, and compositions comprising the same, that can be used to treat or prevent hepatitis B virus (HBV) infections in a patient. In certain embodiments, the compounds and compositions of the invention are capsid inhibitors. (Formula I)
In one embodiment, a continuous process for preparing organic carbonate solvent of Formula (I) as described herein comprises contacting a first reactant (an alcohol) with a reactive carbonyl source (carbonyldiimidazole (CDI) or an alkylchloroformate) in the presence of a catalyst in reaction stream flowing through a continuous flow reactor at temperature 20° C. to about 160° C. and at a flow rate providing a residence time in the range of about 0.1 minute to about 24 hours; collecting a reactor effluent exiting from the continuous flow reactor; recovering a crude product from the reactor effluent; and distilling the crude product to obtain the organic carbonate compound of Formula (I). In another embodiment, the first reactant is an epoxide and the carbonyl source is carbon dioxide.