N-Heterocyclic Carbene Catalyzed [3+2] Cycloaddition of Enals with Masked Cinnamates for the Asymmetric One-Pot Synthesis of Adipic Acid Derivatives
作者:Xiang-Yu Chen、Sun Li、He Sheng、Qiang Liu、Ehsan Jafari、Carolina von Essen、Kari Rissanen、Dieter Enders
DOI:10.1002/chem.201703579
日期:2017.9.21
asymmetric [3+2] cycloaddition of enals with masked cinnamates opens a new short entry to adipic acid derivatives in moderate to good yields and high stereoselectivities. The utility of the protocol is showcased by the one-pot asymmetric synthesis of 3S,4S-disubstituted adipic acids, precursors for the synthesis of 3,4-disubstituted gababutins, which are used for the treatment of various diseases.
一锅到己二酸:NHC催化的不对称[3 + 2]环戊烯与掩蔽的肉桂酸酯的加成反应为己二酸衍生物的新进入提供了一条捷径,中度到良好的产率和高的立体选择性。通过一锅式不对称合成3 S,4 S-二取代的己二酸(用于合成3,4-二取代的gababutins的前体,用于治疗各种疾病)展示了该协议的实用性。