Synthesis of 7-bromo, 7-phenylethynyl, 7-azido, and 7-nitro derivatives of N-acetyl-1,3a,4,8b-tetrahydrocyclopenta[b]indole
摘要:
7-Bromo-, 7-phenylethynyl-, 7-azido-, 7-nitro-, and 5,7-dinitro-substituted N-acetyl-1,3a,4,8b-tetrahydrocyclopenta[b]indoles have been synthesized starting from anilines and 3-chlorocyclopentene. The NMR spectra of N-acetyl-7-nitro-1,3a,4,8b-tetrahydrocyclopenta[b]indoles displayed no signal doubling typical of the other 7-substituted derivatives.
a variety of alcohols with anilines, because the unique acidity of the H-mont catalyst effectively prevents the neutralization by the basic anilines. In addition, amides, indoles, 1,3-dicarbonyl compounds, and allylsilane act as nucleophiles for the H-mont-catalyzed substitutions of alcohols, which allowed efficient formation of various C−N and C−C bonds. The solid H-mont was reusable without any appreciable
Reaction of phenyl azide with alkenes in the presence of AlCl3 gives an aziridiniumâAlCl3 complex viaan azideâAlCl3 complex; this reaction is followed by ring-opening reactions of the aziridiniumâAlCl3 complex to give N-allylanilines and/or N-phenyl-β-chloroamines after work-up with aqueous Na2CO3, but the reaction with cis-cyclo-octene yields a novel aziridine, 9-phenyl-9-azabicyclo[6.1.0]nonane after the work-up.