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From Chemical & Engineering News: Latest News:
With just a pinch of salt, a team of researchers in Japan have come up with an environmentally friendly catalyst to build 2,3-dihydrobenzofuran motifs via asymmetric oxidative cyclization of ketophenols. The team, led by Muhammet Uyanik and Kazuaki Ishihara of Nagoya University, employs iodine as a way to sidestep the toxic heavy metals normally required to build these pharmaceutically useful motifs (Science 2010, 328, 1376). The enantioselective reaction also uses reagents that are greener than those used in previous iodine-based catalytic strategies.
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