Click Annulation of Pseudo[2]rotaxane to [2]Catenane Exploiting Homoditopic Nitrile N-Oxide
摘要:
A mild annulation reaction of a propargyl-terminated pseudorotaxane with a homoditopic stable nitrite N-oxide enabled the efficient synthesis of catenanes consisting of not only dibenzo-24-crown-8-ether (DB24C8) but also dibenzo-30-crown-10-ether (DB30C10) as a wheel component. A dynamic H-1 NMR study showed the highly enhanced mobility of the components of the DB30C10-based[2]catenane due to the enlarged wheel cavity.
CROSSLINKER, CROSSLINKED POLYMER MATERIAL, AND PRODUCTION METHOD OF THE CROSSLINKED POLYMER MATERIAL
申请人:SEO Akishige
公开号:US20110224380A1
公开(公告)日:2011-09-15
The present invention provides a crosslinker used for crosslinking a polymer material having, in the molecule thereof, a multiple bond reactable with a nitrile oxide, the crosslinker including a bifunctional nitrile oxide having an aromatic nitrile oxide derivative structure in which one hydrogen atom of an aromatic ring is substituted with a nitrile oxide group and all hydrogen atoms at an ortho-position of the nitrile oxide group are substituted with a substituent other than a nitrile oxide group, wherein two such aromatic nitrile oxide derivative structures are bonded to either two oxy groups of a di-oxy structure having the two oxy groups or two carbonyl groups of a di-carbonyl structure having the two carbonyl groups.
US8530585B2
申请人:——
公开号:US8530585B2
公开(公告)日:2013-09-10
Synthesis of a Kinetically Stabilized Homoditopic Nitrile<i>N</i>-Oxide Directed toward Catalyst-free Click Polymerization
A kinetically stabilized homoditopic nitrile N-oxide was prepared for a catalyst-free click polymerization that efficiently proceeded via 1,3-dipolar cycloaddition with several bifunctional alkyne, alkene, and nitrile monomers. The polymerization afforded the corresponding polymers with high molecular weights and yields.
A mild annulation reaction of a propargyl-terminated pseudorotaxane with a homoditopic stable nitrite N-oxide enabled the efficient synthesis of catenanes consisting of not only dibenzo-24-crown-8-ether (DB24C8) but also dibenzo-30-crown-10-ether (DB30C10) as a wheel component. A dynamic H-1 NMR study showed the highly enhanced mobility of the components of the DB30C10-based[2]catenane due to the enlarged wheel cavity.