Butylvinyl ether

Fig. 7. ESR spectra of 3-methylpentane glass containing 9 mole-% of n-butylvinyl-ether irradiated by y-rays to a dose of 9 x 104 rad at 77° K. Solid line, 10 min after irradiation dotted line, after photobleaching by infrared lights...

In the first study 2,2-dimethoxy-2-phenyl acetophenone was photolysed at 366 ran in n-butylvinyl ether in the presence of di-p-tolyl iodonium hexafluorophosphate as oxidising salt. The free radicals produced in the photolysis were transformed into cationic active species for the polymerisation of the vinyl ether by the electron transfer to the iodonium ion. In the second report, various radical sources were photolysed in the presence of the monomer and silver hexafluorophosphate, the latter acting as one-electron oxidant. 

Butoxy-2,3-dihydropyran-4-one 381 was prepared in 70% yield by refluxing diazomalonaldehyde in butylvinyl ether. Presumably, the loss of nitrogen from the diazo compound was accompanied by a hydrogen 1,2-shift yielding formylketone, whose [4+2]-cycloaddition with enol ether liberated the six-membered heterocycle (90JOC4975). 

The phases of -butylvinyl ether (C4VE) and -octadecylvinyl ether (C18VE) crosslinked with triethylene glycol divinyl ether or divinylbenzene were investigated by means of solid-state CPMAS NMR and HR MAS NMR in suspended-state. ... 

The regioselectivity of arylation of the electron-rich olefin, n-butylvinyl ether with 4-nitrophenyl triflate has been investigated129. Without added lithium salt the regioselectivity was low (fr.a = 1.5) whereas addition of a lithium halide in DMF strongly promotes / -arylation (p/oc =13) and addition of tetrabutylammonium halide in CH3CN gave a somewhat lower regioselectivity (P/[Pg.932]

Although Webster et al. found that triflic acid/dimethyl sulfide initiated polymerizations of t-butylvinyl ether are not living at 0 °C in CH2CI2 [107], plots of the degree of polymerization against [M]o/[I]q demonstrate that transfer is usually not detectable at the molecular weights attempted in these... 

In more recent studies by Xiao and coworkers [40m,n], Mizoroki-Heck reactions catalysed by Pd(OAc)2 associated with dppp and performed from the eleclron-rich alkene ( -butylvinyl ether) and aryl halides (without any halide scavenger, i.e. under the conditions of the textbook neutral mechanism of Scheme 1.27 proposed by Cabri and Candiani [Ig]) give a mixture of branched and linear products in DMF, whereas the branched product is exclusively produced in ionic liquids (in the absence of halide scavengers) in a faster reaction. Whatever the medium, the cationic complex ArPd5(dppp)+ is always the sole reactive complex with electron-rich alkene (Scheme 1.33) [53]. Consequently, the regioselectivity should not vary with the experimental conditions. 

In the catalytic reactions of Xiao and coworkers [40m,n] performed in DMF from aryl bromides and -butylvinyl ether, a mixture of branched and linear products is formed... 

Methyl acrylate Vinyl versatate Vinyl isopropylether re-Dodecyl acrylate re-Hexyl methacrylate i-Propyl acrylate Tetradecyl methacrylate i-Butylvinyl ether re-Octyl methacrylate Ethyl acrylate Vinylidene chloride Vinyl 2-ethylhexanoate re-Propyl acrylate s Ethyl vinyl ether re-Propyl acrylate re-Butyl acrylate Butyl vinyl ether re-Hexyl acrylate ... 

Alternating copolymers are the result of the copolymerization of 2-vinylpyridine with butylvinyl ether in the presence of acetic acid [(a) acetic acid =1 1.3] [610]. Other examples for alternating copolymers are (la)/vinyl acetate copolymerized in the presence of acetic acid [611] and (c)/acrylonitrile as well as (c)/acrylic amide, using K2S2O8 as complexing initiator [612]. 

Al 1 vinyl copolymer was also reported when excess p-CHaPhSOjNa" was used, and added monomers such as vinylsulfonate, butylvinyl ether, AMPS, or stilbene were not incorporated into the polymer. 

Poly(s c-butylvinyl ether), see Poly(propylvinyl ether), 1-methyl-Poly(fert-butylvinyl ether)... 

Dimethyl-1 -butene tert-Butylethylene sulfide tert-Butylethylene oxide ert-Butylvinyl ether... 

---