76089-31-1Relevant articles and documents
Selective Inclusion of Fluoride within the Cavity of a Two-Wall Bis-calix[4]pyrrole
Chen, Fangyuan,He, Qing,Li, Aimin,Sessler, Jonathan L.,Xiong, Shenglun,Xu, Guangyu,Zhao, Tian
, (2020)
We report what to our knowledge is the smallest bis-calix[4]pyrrole (2). It proved capable of trapping fluoride anions exclusively relative to other anions (Cl-, Br-, SCN-, NO3-, H2PO4-, HSO4-, SO42-, and HP2O73- tetrabutylammonium salts), as confirmed by 1H NMR spectroscopy (CDCl3), X-ray diffraction analysis, DFT calculations, and molecular dynamics simulations. The F- selectivity is ascribed to the small size of the cavity in 2.
Organocatalytic asymmetric reaction cascade to substituted cyclohexylamines
Zhou, Jian,List, Benjamin
, p. 7498 - 7499 (2008/02/10)
We report a new strategy for organocatalytic cascade reactions. Accordingly, enamine catalysis, iminium catalysis, and Bronsted acid catalysis can work in concert in a highly enantioselective organocatalytic cascade sequence toward chiral cis-3-substituted cyclohexylamines. We found that an achiral amine in combination with a catalytic amount of a chiral Bronsted acid can accomplish an aldol addition-dehydration-conjugate reduction-reductive amination to provide potential intermediates of pharmaceutically active compounds in good yields and excellent enantioselectivities. Copyright
Synthesis of 2H-Pyran-3-(6H)-ones
Skinnemoen,Kari,Undheim,Kjell
, p. 295 - 298 (2007/10/02)
5-Substituted 2H-pyran-3(6H)-ones have been synthesised by intramolecular aldol condensation of diacetonyl and acetonyl phenacyl ethers which were accessible by hydration of corresponding 2-propynyl ethers.
