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Stereoselectivity in Pinacol-Homocoupling Mediated by Samarium Diiodide.

✍ Scribed by Peter Gaertner; Max Knollmueller; Joachim Broeker

Publisher
John Wiley and Sons
Year
2004
Weight
120 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract The pinacol coupling reaction of (__Rp__)‐2‐diphenylphosphanyl ferrocenecarbaldehyde (**1**) was smoothly mediated by divalent samarium triflate to give (__R__,__R__)‐diol **2a** predominantly, whereas the use of samarium(II) iodide resulted in low selectivity as described in the previo