A Novel Chiral H′<sub>4</sub>-NOBIN Schiff Base for Hetero-Diels-Alder Reaction of Danishefsky’s Diene with Aldehydes
作者:Xinsheng Li、Xiangyan Meng、Hong Su、Xiaohua Wu、Dongcheng Xu
DOI:10.1055/s-2008-1042913
日期:2008.4
1′-binaphthyl, and the structure was proved via X-ray analysis of its salicyl-aldehyde Schiff base, which was tested in the enantioselective titanium-catalyzed hetero-Diels-Alder reaction of Danishefsky’s diene with aldehydes. The reaction provided dihydropyranone in moderate to high yield (up to 99%) and enantioselectivities (up to 84.5% ee).
2-氨基-2'-羟基-1,1'-联萘部分加氢合成了新型手性H'4-NOBIN,其结构通过水杨醛席夫碱的X射线分析证实,这是在对映选择性钛催化的Danishefsky's二烯与醛的异质Diels-Alder反应中测试的。该反应以中等至高产率(高达 99%)和对映选择性(高达 84.5% ee)提供二氢吡喃酮。