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Para-Methoxybenzyl chloride

Estimated at 20°C from the temperature dependence of the Hammett p value for the para-nitrobenzyl chloride reaction. The p value for the para-methoxybenzyl chloride reaction measured at 0°C was-0.26. rfThe error in the individual KIE is +0.00015. [Pg.258]

A study of alkylations with a group of substituted benzyl halides and a range of Friedel-Crafts catalysts has provided insight into the trends in selectivity and orientation that accompany changes in both the alkyl group and the catalysts. There is a marked increase in substrate selectivity on going from / -nitrobenzyl chloride to /i-methoxybenzyl chloride. For example, with titanium tetrachloride as the catalyst, Aitoi Abenz increases from 2.5 to 97. This increase in substrate selectivity is accompanied by an increasing preference for para substitution. With /i-nitrobenzyl chloride, the ortho para ratio is 2 1 (the... [Pg.581]

See other pages where Para-Methoxybenzyl chloride is mentioned: [Pg.192]    [Pg.248]    [Pg.251]    [Pg.192]    [Pg.248]    [Pg.251]    [Pg.84]    [Pg.1097]    [Pg.27]    [Pg.807]    [Pg.410]    [Pg.572]    [Pg.513]    [Pg.471]    [Pg.802]   
See also in sourсe #XX -- [ Pg.192 ]



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