InCl3/Al mediated pinacol coupling reactions of aldehydes and ketones in aqueous media
作者:Chunyan Wang、Yuanjiang Pan、Anxin Wu
DOI:10.1016/j.tet.2006.10.061
日期:2007.1
A systematic work on the homo-pinacol couplingreactions of benzophenones, aldehydes, and acetophenones in aqueousmedia with InCl3/Al is described for the first time, in which various 1,2-diols are obtained in moderate to good yields.
Reductive Coupling of Aromatic Carbonyl Compounds to Pinacols Using Zinc Powder in Aqueous Media†
作者:Lei Wang、Xinghua Sun、Yongmin Zhang
DOI:10.1039/a800478a
日期:——
Zinc-mediated reductive coupling of aromatic carbonylcompounds occurs to give corresponding 1,2-diols in moderate to good yields in saturated NH4Cl(aq)–THF solution at room temperature.
Stereoselective pinacol coupling of planar chiral (benzaldehyde)Cr(CO)3, (benzaldimine)Cr(CO)3, ferrocenecarboxaldehyde and (dienal)Fe(CO)3 complexes with samarium diiodide
作者:Nobukazu Taniguchi、Motokazu Uemura
DOI:10.1016/s0040-4020(98)00778-9
日期:1998.10
intermolecular pinacol coupling of the planar chiral tricarbonylchromium complexes of o-substituted benzaldehydes or benzaldimines with samarium(II) diiodide in THF produces exclusively threo 1,2-diols or 1,2-diamines in an optically pure form, while the corresponding racemico-substituted benzaldehyde or benzaldimine chromium complexes give a mixture of threo and erythro pinacol coupling products in a various
Selective Pinacol Coupling on Regeneratable Supported Acids in Sole Water
作者:Nicolas Sotto、Muriel Billamboz、Carole Chevrin-Villette、Christophe Len
DOI:10.1021/acs.joc.5b00837
日期:2015.6.19
Efficient pinacol coupling was developed in sole water, using a reusable heterogeneous supported acid source and zinc as cheap available metal source. This medium can be easily regenerated up to 10-fold without loss of activity. Moreover, supported acids enhance the selectivity of the pinacol coupling reaction compared with homogeneous acids.