Rh(III)-Catalyzed C–H Amidation of Indoles with Isocyanates
作者:Taejoo Jeong、Sangil Han、Neeraj Kumar Mishra、Satyasheel Sharma、Seok-Yong Lee、Joa Sub Oh、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1021/acs.joc.5b00763
日期:2015.7.17
The rhodium(III)-catalyzed direct amidation of indoles and pyrroles with aryl and alkyl isocyanates is described. These transformations provide a facile and efficient construction of C2-amidated N-heterocyclic scaffolds.
Rhodium(III)-Catalyzed Selective CH Cyanation of Indolines and Indoles with an Easily Accessible Cyano Source
作者:Neeraj Kumar Mishra、Taejoo Jeong、Satyasheel Sharma、Youngmi Shin、Sangil Han、Jihye Park、Joa Sub Oh、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1002/adsc.201401152
日期:2015.4.13
The rhodium‐catalyzed selective cyanation of CH bonds of indolines and indoles with N‐cyano‐N‐phenyl‐para‐methylbenzenesulfonamide is described. This protocol offers a facile access to C‐7 cyanated indolines and C‐2 cyanated indoles with high site selectivity and excellent functional group tolerance.
Rhodium
<sup>III</sup>
/
<scp>
Silver
<sup>I</sup>
</scp>
Relay Catalyzed C—H Aminomethylation with Imine Equivalents and Lewis Acid Catalyzed [4+2] Cycloaddition of Indoles with Triarylhexahydrotriazine
<sup>†</sup>
作者:Ruixing Liu、Yin Wei、Min Shi
DOI:10.1002/cjoc.202000018
日期:2020.9
bioactive compounds. We revealed the C3‐selectivity of this reaction through a detailed mechanistic investigation. Meanwhile, during the examination of the reaction conditions, we discovered another [4+2] cycloaddition pathway to afford tetrahydro‐indolo[3,2‐c]quinoline scaffold products via silver or Lewisacid catalysis.
本文报道了Rh III / Ag I中继催化吲哚与三芳基六氢三嗪(THT)的C(sp 2)-H偶联。合并Rh III催化的C(sp 2)-H键活化和银促进的THT解离后,便发现了有效的吲哚的C3氨基甲基化方案,可提供高收率的C3氨基甲基吲哚,并显示出用于合成复杂生物活性化合物的潜在应用。我们通过详细的机理研究揭示了该反应的C3选择性。同时,在检查反应条件期间,我们发现了另一种[4 + 2]环加成途径,可提供四氢-吲哚[3,2- c ]喹啉支架产品通过银或路易斯酸催化。
Trifluoromethylallylation of Heterocyclic C–H Bonds with Allylic Carbonates under Rhodium Catalysis
作者:Miji Choi、Jihye Park、Satyasheel Sharma、Hyeim Jo、Sangil Han、Mijin Jeon、Neeraj Kumar Mishra、Sang Hoon Han、Jong Suk Lee、In Su Kim
DOI:10.1021/acs.joc.6b00721
日期:2016.6.3
The rhodium(III)-catalyzed γ-trifluoromethylallylation of various heterocyclic C–H bonds with CF3-substituted allylic carbonates is described. These reactions provide direct access to linear CF3-containing allyl frameworks with complete trans-selectivity via C–H bond activation followed by a formal SN-type reaction pathway.
Ruthenium(II)- or Rhodium(III)-Catalyzed Grignard-Type Addition of Indolines and Indoles to Activated Carbonyl Compounds
作者:Hyeim Jo、Jihye Park、Miji Choi、Satyasheel Sharma、Mijin Jeon、Neeraj Kumar Mishra、Taejoo Jeong、Sangil Han、In Su Kim
DOI:10.1002/adsc.201600297
日期:2016.9.1
The ruthenium(II)‐ or rhodium(III)‐catalyzed pyrimidinyl‐directed Grignard‐type C−H additions of N‐heterocycles with activated aldehydes and ketones are described. A cationic ruthenium catalyst and sodium acetate additive in dichloroethane as solvent were found to be optimal catalytic system for the construction of C‐7 alkylated indolines. In sharp contrast, a cationic rhodium complex allows the generation