作者:Ankit Sharma、Laure Guénée、Jean-Valère Naubron、Jérôme Lacour
DOI:10.1002/anie.201100134
日期:2011.4.11
Bridging the gap: Configurationally stable ethano‐bridged Tröger bases have been prepared in a single step by the direct rhodium(II)‐catalyzed reaction of methano‐bridged Tröger bases and diazo esters (see scheme). The process is general, enantiospecific, diastereoselective (with introduction of a new quaternary carbon center), and regioselective.
弥合差距:通过甲醇(II)桥连的Tröger碱与重氮酯的直接铑(II)催化反应,一步制备了结构稳定的乙醇桥连的Tröger碱(参见方案)。该过程是一般的,对映体特异性的,非对映选择性的(引入了新的季碳中心)和区域选择性的。