Spiro[indoline-3,3′-pyrrolidine] and spiro[indoline-3,3′-piperidine] derivatives were synthesized in a substitution-controlled manner under the catalysis of cationic gold(I) species in the presence of Hantzschester (HEH). The optimal reaction condition was determined by screening, and the functional group tolerances of these two pathways were examined by readily synthetic substrates. The endo and
Asymmetric Chlorocyclization of Indole-3-yl-benzamides for the Construction of Fused Indolines
作者:Qin Yin、Shu-Li You
DOI:10.1021/ol5007532
日期:2014.5.2
(DHQD)(2)PHAL catalyzed enantioselective chlorocyclization of indole-3-yl-benzamides was realized. Fused indolines containing a continuous quaternary carbon center and tertiary carbon center were obtained in good yields with excellent enantioselectivity (up to 98% yield and >99% ee).
Quantum Mechanical Prediction and Experimental Verification of Au(I)-Catalyzed Substitution-Controlled Syntheses of 1<i>H</i>-Pyrido[4,3-<i>b</i>]indole and Spiro[indoline-3,3′-pyridine] Derivatives
functional theory calculations were applied to predict the pathways of gold(I)-catalyzed cycloisomerization of the indole substrates with 1,6-enynes, which were consistent with the ensuing experimental results. The substitution-controlled synthesis led to the formation of 1H-pyrido[4,3-b]indole and spiro[indoline-3,3′-pyridine] derivatives in a tunable way. The reactions had good functional group tolerances
应用密度泛函理论计算预测了金(I)催化的吲哚底物与 1,6-烯炔的环化异构化途径,这与随后的实验结果一致。取代控制合成导致以可调方式形成 1 H-吡啶并[4,3- b ]吲哚和螺[吲哚啉-3,3'-吡啶]衍生物。该反应具有良好的官能团耐受性,并根据计算和实验结果提出了可能的机理。