Organocatalytic Enantioselective Aminoalkylation of 5‐Aminopyrazole Derivatives with Cyclic Imines
作者:Laura Carceller‐Ferrer、Aleix González del Campo、Carlos Vila、Gonzalo Blay、M. Carmen Muñoz、José R. Pedro
DOI:10.1002/ejoc.202001314
日期:2020.12.31
The first enantioselective alkylation of 5‐aminopyrazoles is described with good results. The organocatalytic alkylation of 5‐aminopyrazoles have been accomplished using benzoxathiazine 2,2‐dioxides as electrophiles and a bifunctional squaramide organocatalyst.
Palladium-catalyzed amino group arylation of 1,3-disubstituted 1H-pyrazol-5-amine based on Buchwald–Hartwig reaction
作者:Mateusz Kucharek、Andrzej Danel
DOI:10.1007/s10593-021-02961-z
日期:2021.6
in one step utilizing commercially available aminopyrazoles and aryl halides. Thus, a series of 5-N-aryl-1,3-disubstituted 1H-pyrazol-5-amines were obtained with satisfactory yields under optimized reaction conditions.
A simple and efficient synthesis of 1,3,6-trisubstituted pyrazoloquinolines via intramolecular cyclization – optimization studies
作者:Mateusz Kucharek、Andrzej Danel、Arkadiusz Gut
DOI:10.1007/s10593-022-03127-1
日期:2022.11
In this work, we developed a straightforward and convenient method for the synthesis of substituted pyrazoloquinolines – highly desirable compounds for many high-tech and biomedical applications. On the basis of intramolecularcyclization of 5-(N-aryl)aminopyrazoles in the presence of DMF diethyl acetal and POCl3, a series of differently substituted pyrazoloquinolines were synthesized. The synthetic