Continuous flow synthesis of arylhydrazines <i>via</i> nickel/photoredox coupling of <i>tert</i>-butyl carbazate with aryl halides
作者:Alejandro Mata、Duc N. Tran、Ulrich Weigl、Jason D. Williams、C. Oliver Kappe
DOI:10.1039/d0cc06787c
日期:——
Nickel/photoredox catalyzed C–N couplings of hydrazine-derived nucleophiles provide a powerful alternative to Pd-catalyzed methods. This continuous-flowphotochemical protocol, optimized using design of experiments, achieves these couplings in short residence times, with high selectivity. A range of (hetero)aryl bromides and chlorides are compatible and understanding of process stability/reactor fouling
The present invention relates to the use of pyrazolopyrimidine compounds for the production of pharmaceutical compositions for the prophylaxis and/or treatment of diseases which can be influenced by the inhibition of the kinase activity of Mnk1 and/or Mnk2 (Mnk2a or Mnk2b) and/or variants thereof.
The present invention relates to the use of pyrazolopyrimidine compounds for the production of pharmaceutical compositions for the prophylaxis and/or treatment of diseases which can be influenced by the inhibition of the kinase activity of Mnk1 and/or Mnk2 (Mnk2a or Mnk2b) and/or variants thereof.
Enantioselective Synthesis of N–N Amide–Pyrrole Atropisomers via Paal–Knorr Reaction
作者:Yuanlin Wei、Fan Sun、Guofeng Li、ShiYu Xu、Ming Zhang、Liang Hong
DOI:10.1021/acs.orglett.3c03280
日期:2024.3.29
we present a highly efficient enantioselective synthesis of monoheteroaryl N–N atropisomers via an asymmetric Paal–Knorr reaction, affording a diverse array of N–N amide–pyrrole atropisomers with excellent enantioselectivities. Gram-scale synthesis and post-transformations of the product demonstrated the synthesis utility of this method. Racemization experiments confirmed the configurational stability
作者:Moritz Fink、Jannik Stäuble、Maïté Weisgerber、Erick M. Carreira
DOI:10.1021/jacs.4c01786
日期:2024.4.10
convenient syntheses of aryl azocyclopropeniums and a study of their photochemical properties. Incorporation of the smallest arene leads to pronounced redshift of the π–π* absorbance band, compared to azobenzenes. Photoisomerization under purple or green light irradiation affords Z- or E-isomers in ratios up to 94% Z or 90% E, and the switches proved stable over multiple irradiation cycles. Thermal half-lives