molecular switch may be responsible for the observed differences in 5-HT6R activity of the studied chemotypes with different amine-like fragments. Considering the multiple functionalization sites of the embedded guanidine fragment, diverse libraries were constructed, and the relationshipsbetween the structure and activity, metabolic stability, and solubility were established. Compounds from the N
Transition-metal-free regioselective hydroamination of styrenes with amino-heteroarenes
作者:Priyanka Meena、Ayushee、Monika Patel、Akhilesh K. Verma
DOI:10.1039/d2cc02781j
日期:——
The base-mediated anti-Markovnikov hydroamination of functionally varied styrenes with amino-substituted pyridine, quinoline, pyrimidine, pyrazine, and phenanthridine with excellent regioselectivity has been described. Double hydroamination was observed chemoselectively on the secondary amine, leaving the primary amine intact. Experimental evidence suggests that the proposed reaction involves the nucleophilic
Palladium-catalyzed remote C–H functionalization of 2-aminopyrimidines
作者:Animesh Das、Akash Jana、Biplab Maji
DOI:10.1039/d0cc00575d
日期:——
A straightforward strategy was developed for the arylation and olefination at the C5-position of the N-(alkyl)pyrimidin-2-amine core with readily available aryl halides and alkenes, respectively. This approach was highly regioselective, and the transformation was achieved based on two different (Pd(ii)/Pd(iv)) and (Pd(0)/Pd(ii)) catalytic cycles.