[EN] METATHESIS POLYMERIZATION METHODS<br/>[FR] PROCÉDÉS DE POLYMÉRISATION PAR MÉTATHÈSE
申请人:UNIV WASHINGTON
公开号:WO2016036976A1
公开(公告)日:2016-03-10
The present disclosure is directed to methods of making a polymer, including exposing a reaction mixture including a strained cyclic unsaturated monomer and an organic initiator to a stimulus to provide an activated organic initiator, whereby the activated organic initiator is effective to polymerize the strained cyclic unsaturated monomer via a 4-membered carbocyclic intermediate to provide a polymer having constitutional units derived from the strained cyclic unsaturated monomer.
Phospinite-imidazolines and metal complexes thereof
申请人:Menges Federik
公开号:US20070010493A1
公开(公告)日:2007-01-11
Compounds of the formulae (I) and (Ia) where X
1
is secondary phosphino; R
3
is a hydrocarbon radical having from 1 to 20 C atoms, a heterohydrocarbon radical which has from 2 to 20 atoms and at least one heteroatorn selected from the group consisting of O, S, NH and NR, or an —SO
2
—R radical; R is C
1
-C
18
-alkyl, phenyl or benzyl; the radicals R
4
are each, or the two radicals R4 together a hydrocarbon radical having from 1 to 20 C atoms; R
01
is a hydrocarbon radical having from 1 to 20 C atoms; and R
02
and R′
o2
are each, independently of one another, a hydrogen atom or independently have the meaning of R
01
, or R
01
and R
02
together with the C atom to which they are bound form a three- to eight-membered hydrocarbon or hetero hydrocarbon ring. The compounds are chiral ligands for complexes of metals of transition groups I and VIII which act as catalysts for asymmetric additions, for example of hydrogen, onto prochiral unsaturated organic compounds.
作者:Kelli A. Ogawa、Adam E. Goetz、Andrew J. Boydston
DOI:10.1021/ja512073m
日期:2015.2.4
We have developed a method to achieve ring-openingmetathesispolymerization (ROMP) mediated by oxidation of organic initiators in the absence of any transitionmetals. Radical cations, generated via one-electron oxidation of vinyl ethers, were found to react with norbornene to give polymeric species with microstructures essentially identical to those traditionally obtained via metal-mediated ROMP
The present disclosure is directed to methods of making a polymer, including exposing a reaction mixture including a strained cyclic unsaturated monomer and an organic initiator to a stimulus to provide an activated organic initiator, whereby the activated organic initiator is effective to polymerize the strained cyclic unsaturated monomer via a 4-membered carbocyclic intermediate to provide a polymer having constitutional units derived from the strained cyclic unsaturated monomer.