Scope of the Reactions of Indolyl- and Pyrrolyl-Tethered <i>N</i>-Sulfonyl-1,2,3-triazoles: Rhodium(II)-Catalyzed Synthesis of Indole- and Pyrrole-Fused Polycyclic Compounds
作者:Liangbing Fu、Huw M. L. Davies
DOI:10.1021/acs.orglett.7b00180
日期:2017.4.7
An efficient synthesis of tetrahydrocarboline-type products and polycyclic spiroindolines has been achieved. The transformation proceeds via rhodium(II)-catalyzed intramolecular annulations of indolyl- and pyrrolyl-tethered N-sulfonyl-1,2,3-triazoles. The reaction could be tuned toward either the formal [3 + 2] cycloaddition or the C–H functionalization reaction depending on the electronic and structural
Synthesis of Substituted 3-Indolylimines and Indole-3-carboxaldehydes by Rhodium(II)-Catalyzed Annulation
作者:Basker Rajagopal、Chih-Hung Chou、Ching-Cheng Chung、Po-Chiao Lin
DOI:10.1021/ol501618z
日期:2014.7.18
3-indolylimines from N-propargylanilines through Rh(II)-catalyzed denitrogenative annulation of N-sulfonyl-1,2,3-triazoles. Further combined with hydrolysis or reduction, a one-pot method is developed to enable the direct incorporation of an imine, aldehyde, or amine group into an indole system from an alkyne. A variety of substituted 3-indolylimines, indole-3-carboxaldehydes, and 3-Indolylmethanamines are
Intramolecular annulation of aromatic rings with N-sulfonyl 1,2,3-triazoles: divergent synthesis of 3-methylene-2,3-dihydrobenzofurans and 3-methylene-2,3-dihydroindoles
作者:Xiang-Ying Tang、Yong-Sheng Zhang、Lv He、Yin Wei、Min Shi
DOI:10.1039/c4cc08343a
日期:——
The controllable synthesis of 3-methylene-2,3-dihydrobenzofurans2and 3-methylene-2,3-dihydroindoles5has been developed via cycloisomerization of N/O-tethered aryltriazoles.
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
We present the generalized beneficial effect of naphthalene and its simple derivatives on energy-transfer reactions. Increased reactions rates and higher yields are achieved for several reactivities, varying substrates, solvents, light sources and photocatalysts. The consistent trend is observed using molar excess of naphthalene or a catalytic amount of tailored bi-naphthyl derivatives. These findings