Silver-Catalyzed Allenylation and Enantioselective Propargylation Reactions of Ketones
作者:Benjamin L. Kohn、Naoko Ichiishi、Elizabeth R. Jarvo
DOI:10.1002/anie.201206971
日期:2013.4.15
lining: Certain silver complexes are capable of selective catalysis of either allenylation or asymmetric propargylation reactions of ketones. Ligand‐free conditions lead to allenyl alcohols as the major product, whereas ligation with Walphos‐8 gives enantioenriched homopropargyl alcohols. This method can be applied to reactions of prochiral diarylketones to provide optically enriched tertiary diaryl alcohols
不只是银衬:某些银络合物能够选择性催化酮的烯丙基化或不对称炔丙基化反应。无配体条件导致以烯丙醇为主要产物,而与Walphos-8的连接产生了对映体富集的高炔丙醇。该方法可用于前手性二芳基酮的反应以提供光学富集的叔二芳基醇。