Two-Step Route to Indoles and Analogues from Haloarenes: A Variation on the Fischer Indole Synthesis
作者:Martyn Inman、Anna Carbone、Christopher J. Moody
DOI:10.1021/jo201866c
日期:2012.2.3
In a new variation on the Fischer indole synthesis, readily available haloarenes are converted into a wide range of indoles in just two steps by halogen–magnesium exchange and quenching with di-tert-butyl azodicarboxylate, followed by reaction with aldehydes or ketones under acidic conditions. The protocol, which is readily extended to the preparation of indole isosteres, 4- and 6-azaindoles and thienopyrroles
A general synthetic route to indolesfrom readily available anilines and epoxides by using ruthenium catalysis is described. This straightforward transformation allows a variety of indoles to be obtained in good yields by using [Ru3(CO)12]/1,1′‐bis(diphenylphosphino)ferrocene as the catalytic system. Water and hydrogen are formed as the only stoichiometric by‐products, making this process highly atom
Synthesis of Indoles Using the Electrophilic Potential of Diazirines
作者:Yoann Schneider、Amol P. Jadhav、Claude Y. Legault
DOI:10.1021/acs.joc.3c01673
日期:2023.10.20
The electrophilic potential of diazirines has been utilized to obtain N-substituted diaziridines that are directly hydrolyzed to produce monosubstituted hydrazines. The hydrazines can undergo the Fisher process with enolizable carbonyls to yield multiple indole derivatives in moderate to high yields. The N-metalated diaziridine intermediates can undergo isomerization prior to electrophilic substitution