One-Pot Procedure for the Synthesis of 1,5-Benzodiazepines from<i>N</i>-Allyl-2-bromoanilines
作者:Marco Weers、Lars H. Lühning、Vanessa Lührs、Christian Brahms、Sven Doye
DOI:10.1002/chem.201604561
日期:2017.1.26
to pharmacologically relevant 1,5‐benzodiazepines. The process takes advantage of the excellent regioselectivity of the initial hydroaminoalkylation performed in the presence of a titanium mono(formamidinate) catalyst and the fact that the exclusively formed branched hydroaminoalkylation products can only undergo palladium‐catalyzed cyclization to 1,5‐benzodiazepines.
The first examples of titanium-catalyzed hydroaminoalkylation reactions of ethylene with secondary amines are presented. The reactions can be achieved with various titanium catalysts and they do not require the use of high pressure equipment. In addition, the first solid-state structure of a titanapyrrolidine that is formed by insertion of an alkene into the Ti-C bond of a titanaaziridine is reported
Hydroaminoalkylation/Buchwald‐Hartwig Amination Sequences for the Synthesis of Novel Thieno‐ or Benzothieno‐Annulated Tetrahydropyridines, Tetrahydroazasilines, and Tetrahydroazasilepines
作者:Michael Warsitz、Stefan H. Rohjans、Marc Schmidtmann、Sven Doye
DOI:10.1002/ejoc.202001523
日期:2021.2.5
Hydroaminoalkylation reactions of 2‐allyl‐, 2‐allyldimethylsilyl‐, or 2‐dimethyl(vinyl)silyl‐substituted 3‐bromothiophenes or 3‐bromobenzothiophenes with secondary amines deliver the branched or the linear addition products with high regioselectivity. A combination of this reaction with a subsequent intramolecular Buchwald‐Hartwig amination results in several one‐pot processes that give direct access
AMIDE DERIVATIVES AS POSITIVE ALLOSTERIC MODULATORS AND METHODS OF USE THEREOF
申请人:Mortell Kathleen H.
公开号:US20090270408A1
公开(公告)日:2009-10-29
The invention relates to novel amide derivatives that are PAMs of neuronal nicotinic receptors, compositions comprising the same, processes for preparing such compounds, and methods for using such compounds and compositions.
The present invention relates to a benzoylurea compound represented by formula (I):
wherein, X and Y represent a fluorine atom or a chlorine atom, R
1
represents a lower alkyl group or the like, R
2
represents a lower alkyl group, R
3
represents a halogen atom or the like, R
4
represents an alkylthio group optionally substituted with one or more of halogen atoms, or a salt thereof, and use thereof for controlling pests and the like.