Ring-opening metathesis polymerization of vinylnorbornene and following polymer modifications

Olefin cross metathesis and ring-closing metathesis in polymer chemistry

“…While CM has also been used for end-group functionalisation 26,27 and cross-linking for self-healing polymers, 28,29 the development of CM to directly functionalise polymer backbones is of growing importance. 25,[30][31][32][33][34][35][36] To the best of our knowledge Coates et al were the first to propose CM functionalisation of alkene containing polyolefins as a general strategy for developing functional polymer architectures in 2004. 30 The authors synthesised a variety of copolymers, exemplified by polymer 16 (Scheme 7).…”

“…The scope of alkene cross partners was expanded in the CM of poly(5-vinyl-2-norborene) using catalyst 4 (18, Scheme 7). 32 Partners were all type I alkenes; cis-1,4-diacetoxybutene, 5-hexenyl acetate, allyl acetoacetate and allyltrimethylsilane. The short pendent arm of polymer 18 makes this alkene more sterically encumbered, hindering the olefin CM reaction.…”

Metathesis Polymerization Reactions Induced by the Bimetallic Complex (Ph4P)2[W2(μ-Br)3Br6]

“…In bulk, PVNBE with low molecular weight and very narrow molecular weight distribution was obtained in moderate yield (entry 6). The 1 H NMR spectrum of PVNBE ( Figure S9) could not provide information about the configuration of the polymer, because signals of olefinic protons of the polymeric chain overlap with the vinylic ones, but indicated that the ring-strained C=C bond was cleaved, while the vinylic one was left intact and available for functionalization [23]. The same reactivity was observed with 2 [19] and 2/PA [20] and is rather unusual.…”

The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014

“…74) [318]; (7) a tris(norbornenecarboxylate) connected to a carbon nanotube [319]; (8) bis(norbornenecarboxylate ester)s (e.g. 73) [320]; (9) 5-ethylidenenorbornene (68) [321], including its use as a part of a self-healing system [322]; (10) vinylnorbornene [323]; (11) tetracyclododecene (69) [324]; (12) norbornadienes connected to various hydrophobic groups, including a steroid system [325]; (13) dicyclopentadiene [326,327,328,329,330,331,332,333,334,335,336], including polymerizations performed in the presence zinc oxide nanoparticles [337], urea formaldehyde microcapsules [338],mildly oxidized graphene oxide [339], barium titanate [340], and high internal phase emulsions [341,342]; (14) the norbornadiene-anthracene Diels-Alder adduct (76) [343,344]; (15) norbornenedicarboxylate esters connected to cyanobiphenyl groups [345], to anthracene groups [346], and to nitroxide groups (e.g. 79) [347]; (16) the three stereoisomeric dimethyl norbornenedicarboxylates (determination of the relative rates of ROMP) [348]; …”