380357-38-0Relevant academic research and scientific papers
Urea vs. carbamate groups: a comparative study in a chiral C2 symmetric organogelator
Lascialfari, Luisa,Pescitelli, Gennaro,Brandi, Alberto,Mannini, Matteo,Berti, Debora,Cicchi, Stefano
, p. 8333 - 8341 (2015/11/09)
The effect of the replacement of molecular moieties (carbamates vs. urea) that drive self-assembly for two organogelators with an identical C2 symmetric molecular structure is described. The main properties of the gels obtained from the urea-ba
Synthesis of an ovoid chiral cage
Couty, Fran?ois,David, Olivier R. P.
scheme or table, p. 1945 - 1948 (2010/04/05)
Evidence for the formation of an ovoid chiral cage, resulting from the auto-assembly of two hexafunctional and three tetrafunctional modules reacting through dynamic covalent bond formation, is provided. Georg Thieme Verlag Stuttgart.
Substituted 3-Amino-Pyrrolidino-4-Lactams
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Page/Page column 11; 14, (2008/06/13)
The invention provides compounds of formula (1), and the pharmaceutically acceptable salt thereof, wherein R1, n and R2 are as described herein; compositions thereof; and uses thereof.
Enantioselective Catalysis, 4. Synthesis of N-Substituted (R,R)-3,4-Bis(diphenylphosphino)pyrrolidines. The Use of their Rhodium Complexes for the Asymmetric Hydrogenation of α-(Acylamino)acrylic Acid Derivatives
Nagel, Ulrich,Kinzel, Elke,Andrade, Juan,Prescher, Guenter
, p. 3326 - 3343 (2007/10/02)
A simple synthesis of (R,R)-3,4-bis(diphenylphosphino)pyrrolidine (6a) and some N-substituted derivatives 6b-m is described. 6l and 6m are optically active tetraphosphanes, composed of two (R,R)-3,4-bis(diphenylphosphino)pyrrolidine units and a dicarboxylic residue.The structure of the parent compound 6a was determined by X-ray diffraction.From the phosphanes 6a-m the cationic 1,5-cyclooctadiene-bisphosphane-rhodium complexes 7a-m were prepared.The complexes 7l and 7m are ligand bridged bis(rhodium) dications.The complexes 7a-m were used for the asymmetric catalytic hydrogenation of the α-(acylamino)acrylic acid derivatives 9a-l.Enantiomeric excesses up to 100percent were achieved.Between 1 and 70 at the optical yields do not depend on the hydrogen pressure.The substrate/catalyst ratio can be as high as 50000/1.
