0000000001298918
AUTHOR
Jas Ward
Selective gas adsorption by calixarene-based porous octahedral M32 coordination cages
Giant octahedral M32 coordination cages were prepared via self-assembly of sulfonylcalix[4]arene-supported tetranuclear M(II) clusters (M = Co, Ni) with hybrid linker based on tris(dipyrrinato)cobalt(III) complexes appended with peripherical carboxylic groups. Due to intrinsic and extrinsic porosity, the obtained solid-state supramolecular architectures demonstrated good performance as adsorbents for the separation of industrially important gases mixtures. peerReviewed
Synthesis of Polycyclic Indolines utilizing a reduction/cyclization cascade reaction
Subsequent reduction and dearomatizing cyclization reactions open up an entry into the synthesis of novel N-fused polycyclic indolines. The dearomatizing cyclization as key step of the sequence proceeds well with Cu(OTf)2 or TfOH as catalyst. At elevated temperature reduction of nitro-substituted precursors with iron under acidic conditions affords a broad variety of polycyclic indolines directly in a two-step cascade reaction in good to excellent yields. Using the developed protocol, the alkaloids Tryptanthrin and Phaitanthrin C have been prepared. peerReviewed
CCDC 2064863: Experimental Crystal Structure Determination
Related Article: Julian H��ffel, Theresa Sperger, Ignacio Funes-Ardoiz, Jas Ward, Kari Rissanen, Franziska Schoenebeck|2021|Science|374|1134|doi:10.1126/science.abj0999