A final tweak: A new phosphoramidite iridium catalyst (see scheme) allows allylic substitutions to be run with a higher degree of regioselectivity than with other iridium catalysts and under aerobic conditions. Mechanistic aspects, in particular, the reversibility of the catalyst formation by CH activation, are also presented. =dibenzocyclooctatetraene.
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Spiess et al. (2008) studied this question.
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