Enantioselective Michael Addition of 1,3-Diketones to Arenesulfonylalkylindoles: A Flexible Gateway to Optically Active 3-sec-Alkyl-Substituted Indoles Containing a Pyrazole Skeleton
作者:Linhai Jing、Zongle Zuo、Shilu Zhang、Rongming Wang、Wujun He、Song Wu、Xiaohua Xie、Dabin Qin
DOI:10.1055/s-0033-1338517
日期:——
4-positions, without decrease of the enantioselectivity. Enantioselective Michael addition of 1,3-diketones to alkylideneindolenines generated in situ from arenesulfonylalkylindoles is described, and a series of optically active C3-alkyl-substituted indole derivatives has been obtained. The resulting adducts can be readily converted into 3-sec-alkyl-substituted indoles containing a pyrazole skeleton, with
摘要 描述了将1,3-二酮对映选择性迈克尔加成到由芳烃磺酰基烷基吲哚原位产生的亚烷基亚吲哚中,并且已经获得了一系列光学活性的C 3-烷基取代的吲哚衍生物。所得的加合物可以容易地转化为含有吡唑骨架的3-仲烷基取代的吲哚,α-和4-位之间具有直接连接,而对映选择性不降低。 描述了将1,3-二酮对映选择性迈克尔加成到由芳烃磺酰基烷基吲哚原位产生的亚烷基亚吲哚中,并且已经获得了一系列光学活性的C 3-烷基取代的吲哚衍生物。所得的加合物可以容易地转化为含有吡唑骨架的3-仲烷基取代的吲哚,α-和4-位之间具有直接连接,而对映选择性不降低。