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Spiropentanes protonation

A short-path distillation apparatus is used, the distillate (oxa-spiropentane plus dichloromethane) being trapped in a reeeiver placed in a methanol-dry ice bath cooled to — 80°. The checkers found it useful to drive out last traces of product by adding several milliliters of dichloromethane to the residual thick paste and distilling. The proton magnetic resonance spectrum (dichloromethane) shows an oetet at 8 0.85 and a singlet at S 3.00 in the ratio 4 2. [Pg.39]

Gas-phase protonation of spiropentane 19 using 3HeT+ or D3+ as protonating agents provided initially the comer protonated spiropentane, which rearranged into 1 -methylcy-clobutyl cation (i.e. bicyclobutonium ion 9)45. Under mild protonating conditions, cis- and trows-2-methylcyclopropylcarbinyl cations 17 and 18 were observed. These cations were presumably formed through the isomerization of the 1-methylcyclobutyl cation 9 into the... [Pg.825]

Protonation of spiro[2.2]pentane 482 yields the C5H9+ ions. Cation 483 was shown to be the initial protonated spiropentane by early experimental (MS) and theoretical... [Pg.223]

See other pages where Spiropentanes protonation is mentioned: [Pg.205]    [Pg.206]    [Pg.205]    [Pg.206]   
See also in sourсe #XX -- [ Pg.825 , Pg.826 ]

See also in sourсe #XX -- [ Pg.825 , Pg.826 ]



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Spiropentane

Spiropentanes

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