Palladium-Catalyzed Vicinal Amino Alcohols Synthesis from Allyl Amines by In Situ Tether Formation and Carboetherification
作者:Ugo Orcel、Jerome Waser
DOI:10.1002/anie.201500636
日期:2015.4.20
Vicinalaminoalcohols are important structural motifs of bioactive compounds. Reported herein is an efficient method for their synthesis based on the palladium‐catalyzed oxy‐alkynylation, oxy‐arylation, or oxy‐vinylation of allylic amines. High regio‐ and stereoselectivity were ensured through the in situformation of a hemiaminal tether using the cheap commercially available trifluoroacetaldehyde
A sheet for ink jet recording that stably holds an image printed thereon without image bleeding even if the sheet is stored in a hot and humid environment for a long period of time, that has excellent resistance to ozone and prevents the recorded image from becoming discolored through time, and that has excellent resistance to light in image portions. The sheet for ink jet recording includes at least one water-soluble compound whose basic skeleton has an ionization energy of 7.0 to 9.0 eV. The water-soluble compound preferably includes at least one of a hydroxyl group, a carboxyl group, and a sulfonic group in a molecule, and/or preferably has an I/O value of no less than 0.5.
Diastereotopic Differentiation on Phosphorus Templates via the Ring-Closing Metathesis Reaction
作者:Diana S. Stoianova、Paul R. Hanson
DOI:10.1021/ol005952o
日期:2000.6.1
[GRAPHICS]A strategy is described in which the ring-closing metathesis reaction is utilized to desymmetrize a number of pseudo-CL-symmetric phosphorus templates 1-3. These reactions give excellent levels of selectivity (12-15:1) with vinyl phosphonamides containing a (E)-Ph group on the diastereotopic olefins. This approach is being developed as an effective method of obtaining P-chiral phosphonamides and phosphonates.
Polymeric film
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0557046B1
公开(公告)日:1999-12-01
POLYBUTYL- OU POLYISOBUTYLAMINES, -HYDRAZINES OU -AZIDES, LEUR PROCEDE DE PREPARATION ET LEURS UTILISATIONS COMME DETERGENTS DANS LES CARBURANTS