4,5-Difluoro-1,2-dehydrobenzene: generation and cycloaddition reactions
摘要:
The oxidation of 1-amino-5,6-difluorobenzotriazole with Pb(OAc)(4) in dry CH2C12 afforded 4,5-difluoro-1,2-dehydrobenzene, a new active intermediate, which can be used in situ for the synthesis of fluorinated carbo- and heterocyclic compounds via cycloaddition reactions.
[EN] NEUROACTIVE STEROIDS, COMPOSITIONS, AND USES THEREOF<br/>[FR] STÉROÏDES NEUROACTIFS, COMPOSITIONS ET UTILISATIONS
申请人:SAGE THERAPEUTICS INC
公开号:WO2015027227A1
公开(公告)日:2015-02-26
Described herein are neuroactive steroids of the Formula (I): or a pharmaceutically acceptable salt thereof; wherein -------, R1, R2, R5, A and L are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e.g., such for inducing sedation and/or anesthesia.
Blue-light-promoted radical C–H azolation of cyclic nitrones enabled by Selectfluor®
作者:Alexey A. Akulov、Mikhail V. Varaksin、Anton N. Tsmokalyuk、Valery N. Charushin、Oleg N. Chupakhin
DOI:10.1039/d1gc00175b
日期:——
An original approach to achieve the C(sp2)–H azolation of cyclic aldonitrones mediated by Selectfluor® has first been employed. By exploiting a metal-free, visible-light-promoted cross-dehydrogenative C–N coupling reaction between model aldonitrones, 2H-imidazole 1-oxides, and NH-containing azoles, a series of novel azaheterocyclic derivatives have been obtained in yields up to 94%. The elaborated
Synthesis of Structurally Diverse Benzotriazoles via Rapid Diazotization and Intramolecular Cyclization of 1,2‐Aryldiamines
作者:Réka J. Faggyas、Nikki L. Sloan、Ned Buijs、Andrew Sutherland
DOI:10.1002/ejoc.201900463
日期:2019.9
mild conditions, using a polymer‐supported nitrite reagent and p‐tosic acid. The functional group tolerance of this approach was further demonstrated with effective activation and cyclization of N‐alkyl, ‐aryl, and ‐acyl ortho‐aminoanilines leading to the synthesis of N1‐substituted benzotriazoles. The synthetic utility of this one‐pot heterocyclization process was exemplified with the preparation of a
The first ring-opening of D–A oxiranes with N-heteroaromatics in a chemoselective C–C bond cleavage manner was achieved. In the presence of 5 mol% of Y(OTf)3 as the catalyst, diverse N-heteroaromatics, including benzotriazoles, purines, substituted benzimidazole, imidazole and pyrazole, reacted well with various D–A oxiranes, providing acyclic nucleoside analogues containing a N-glycosidic bond in
[EN] COMPOSITIONS AND METHODS FOR TREATING CNS DISORDERS<br/>[FR] COMPOSITIONS ET MÉTHODES POUR TRAITER DES TROUBLES DU SNC
申请人:SAGE THERAPEUTICS INC
公开号:WO2016061527A1
公开(公告)日:2016-04-21
Described herein are neuroactive steroids of the Formula (I): or a pharmaceutically acceptable salt thereof; wherein (II), A, R1, R2, R3a, R4a, R4b, R5, R7a, and R7b are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e.g., such for inducing sedation and/or anesthesia.