- Diels-Alder approach to biaryls (DAB): importance of the ortho-nitro moiety in the [4 + 2] cycloaddition.
Diels-Alder approach to biaryls (DAB): importance of the ortho-nitro moiety in the [4 + 2] cycloaddition.
Organic & biomolecular chemistry (2008-01-05)
Bradley O Ashburn, Rich G Carter
PMID18174991
ABSTRACT
A series of nitrophenyl acetylenes were evaluated for their utility in a cycloaddition-cycloreversion approach to polysubstituted biaryls. ortho-Nitrophenyl acetylene consistently provided the target biaryls in superior yields as compared to the meta and para nitro substituted variants.
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