10.1021/jo048985g.s001 Yohan Georges Yohan Georges Yves Allenbach Yves Allenbach Xavier Ariza Xavier Ariza Jean-Marc Campagne Jean-Marc Campagne Jordi Garcia Jordi Garcia An Efficient, Stereoselective Approach to <i>s</i><i>yn</i>-1,2-Diols Protected as Cyclic Carbonates American Chemical Society 2004 Stereoselective Approach cyclic carbonates benzoate analogues 2004-10-15 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/An_Efficient_Stereoselective_Approach_to_i_s_i_i_yn_i_1_2_Diols_Protected_as_Cyclic_Carbonates/3320548 Enantioenriched 4-hydroxyalk-2-ynyl carbonates (or benzoates) have been prepared by stereoselective zinc-mediated addition of alkyl 2-propynyl carbonates (or their benzoate analogues) to aldehydes. Their partial reduction to <i>Z</i>-olefins followed by cyclization under mild Pd-catalyzed conditions allowed a straightforward access to enantioenriched <i>syn</i>-1,2-diols protected as cyclic carbonates.