Diastereoselective palladium(0)-catalyzed reactions of lithium enolates of chiral N-acyloxazolidinones. Asymmetric synthesis of 2-substituted (E)-4-alkylidenepentanedioates
作者:Hideyuki Kanno、Ken Osanai
DOI:10.1016/0040-4039(95)01043-h
日期:1995.7
The palladium(0)-catalyzed reactions of lithium enolates 1 of N-acyloxazolidinones with 3-acetoxy-2-methylenealkanoates 2, easily prepared via DABCO-catalyzed coupling of corresponding aldehydes with acrylates, proceeded diastereoselectively and regioselectively to give chiral N-[(E)-4-alkoxycarbonyl-4-pentenoyl]oxazolidinones3, useful intermediates of metallopeptidase inhibitors.
钯(0)烯醇化物锂催化的的反应1的Ñ与3-乙酰氧基-2- methylenealkanoates -acyloxazolidinones 2,通过容易地制备DABCO催化对应与丙烯酸酯的醛的联接,非对映选择性进行,并且区域选择性,得到手性ñ - [(E)-4-烷氧基羰基-4-戊烯基]恶唑烷酮3,金属肽酶抑制剂的有用中间体。