2-(2-Phenoxyphenylimino) imidazolidine and related compounds (IV and XII) were synthesized and evaluated for hypotensive activity in rats. Most of the 2-aryliminoimidazolidines (IV) were synthesized via the aniline derivatives (VI) by two different methods. Some imidazolidines (IV) were found to be significantly active, with 2-(5-chloro-2-phenoxyphenylimino) imidazolidine (IV-19) being more active than prazosin, the reference compound. The mechanism of action of IV-9 may involve the blockade of peripheral α-adrenergic receptors. This paper describes the synthesis, pharmacology, and structure-activity relationships of the 2-(2-phenoxyphenylimino) imidazolidines.
A general method to construct the scaffolds of dibenzooxazepine and dibenzodiazepine, through Pd-catalyzed isocyanide insertion and intramolecular C(sp2)–H activation, has been developed. This is the first example of seven-membered heterocycle formation by C–H imidoylative annulation.
Verfahren zur Herstellung von Nitro-diphenyl(thio)-ethern
申请人:BAYER AG
公开号:EP0304725A1
公开(公告)日:1989-03-01
Nitro-diphenyl(thio)ether, in denen die Nitrogruppe in ortho-oder para-Stellung zum Ether-Sauerstoff oder Ether-Schwefel steht, können aus Halogen-nitrobenzolen, in denen die Nitrogruppe in ortho- oder para-Stellung zum Halogen steht, und Alkali(thio)phenolaten in flüssigem Ammoniak hergestellt werden, wobei man die Reaktion unter Druck und bei einer Temperatur von -30°C bis +140°C durchgeführt und das Ammoniak nach Beendigung der Reaktion abtrennt.