Rh2(OAc)4 catalyzed highly diastereoselective synthesis of 2,4,5-triaryl-1,3-oxazolidines and spirooxindolyl oxazolidines
作者:Tamilselvan Rajasekaran、B. Sridhar、B.V. Subba Reddy
DOI:10.1016/j.tet.2016.02.055
日期:2016.4
aryldiazoacetate, aldehyde and N-tosylimine has been achieved using 1 mol % of Rh2(OAc)4 for the synthesis of highly substituted triaryl-1,3-oxazolidines in good yields with high diastereoselectivity. This protocol has been successfully extended to cyclic diazoamide, i.e., 3-diazooxindole for the synthesis of fully substituted spirooxindolyl oxazolidines using 3 mol % of Rh2(OAc)4 under similar reaction
使用1 mol%的Rh 2(OAc)4以高收率和高非对映选择性合成高取代的三芳基-1,3-恶唑烷,已经实现了芳基重氮乙酸酯,醛和N-甲苯磺酰亚胺的三组分偶联(3CC)。该方案已成功扩展至环状重氮酰胺,即3-二唑并吲哚并在相似的反应条件下,使用3 mol%的Rh 2(OAc)4合成完全取代的螺并氧杂吲哚基恶唑烷。