GENERATION OF ENDO- AND/OR EXO-NORBORNENECARBOXALDEHYDE AS AN INTERMEDIATE TO FUNCTIONALIZED NORBORNENES
申请人:Bell Andrew
公开号:US20090118539A1
公开(公告)日:2009-05-07
Embodiments in accordance with the present invention provide for forming essentially pure diastereomers of 5/6-substituted norbornene-type monomers. Further, embodiments in accordance with the present invention encompass polymerizing such diastereomers to form addition or ROMP polymers where a desired exo-/endo-ratio of the diastereomers is provided to the polymerization, such ratio designed to provide a desired ratio of endo-/exo-structured repeating units for a resulting polymer to have desired physical or chemical properties.
Synthesis, biological evaluation and SAR studies of novel bicyclic antitumor platinum(IV) complexes
作者:Julia Lorenzo、Aida Delgado、Ángel M. Montaña、Juan M. Mesas、María-Teresa Alegre、María del Carmen Rodríguez、Francesc-Xavier Avilés
DOI:10.1016/j.ejmech.2014.06.042
日期:2014.8
substitution patterns on the platinum atom have been designed in order to evaluate their antiproliferative activity and to establish structure–activity relationship rules. The synthesis of platinum(IV) complexes with axial hydroxyl ligands on the platinum(IV) were carried out by reaction of K2Pt(OH)2Cl4 with the corresponding diamines. The complexes with axial chlorido ligands on the platinum(IV) atom were synthesized
their cycloadditions with norbornadienes. The nitrile oxide was subjected to the cycloaddition with 2,3-disubstituted norbornadienes to evaluate the effect of the substituents on the exo/endo stereoselectivity. The electron-withdrawing substituents tend to favor the formation of the exo-adducts.
Facile Synthetic Approach to Functionalized 4,5-Disubstituted Norbornene Monomers
作者:James H. Wynne、Christopher T. Lloyd、Robert F. Cozzens
DOI:10.1246/cl.2002.926
日期:2002.9
Manipulation of a single Diels-Alder adduct employing a Ritter-type reaction affords a variety of diamido norbornene monomers. These monomers serve as excellent substrates for ring opening metathesis polymerization to afford functionalized polymers. Subsequent reduction of the amide monomers readily affords the corresponding diaminomethyl norbornenes. The functionalities reported were selected to afford maximum coordination ability, thereby facilitating the incorporation of metallic species and allowing for control of solubility by varying the N-alkyl pendant groups.
FACILE PREPARATION OF<i>trans</i>-2,3-bis(-<i>tert</i>-BUTYLAMINOMETHYL) NORBORNENE
作者:J. H. Wynne、W. M. Stalick
DOI:10.1080/00304940209355789
日期:2002.12
sterically hindered amino pendant groups are a class of compounds used in the synthesis of novel advanced organic materials.' Polymers bearing amino and different heteroatom pendant groups are typically synthesized because they are able to chelate metals.2 In addition, polymerization of compound 3, where the bulky amino substituents are t-butyl groups, readily affords a material with a rigid backbone containing