1,3-Dipolar cycloadditions: Part VIII¹ - Microwave irradiation assisted synthesis of <i>N</i>-methyl-<i>C</i>-aryl nitrones

880-881N-Methyl-C-arylnitrones have been synthesized in very high yields within a few minutes from N-methyl-hydroxylamine hydrochloride and aryl aldehydes in presence of sodium hydrogen carbonate in methylene chloride using the microwave irradiation technique

A new route to the synthesis of indolo[2,3-a]carbazoles

A straightforward, easy and smooth process of synthesizing indolo[2,3-a]carbazoles, which can frequently serve as a nucleus of several natural products is reported. The process involves only two steps viz. single electron transfer reaction and subsequent reductive cyclization with hydrazine

An entry to the synthesis of novel nitrogen macroheterocycles

2,2'-Bi(1H-indolyl)-3,3'-dicarbaldehydes, prepared from 1H-indole-3-carbaldehydes by exploiting SET methodology, served as the key compound for synthesizing indolo[2,3-a]carbazoles as well as nitrogen macroheterocycles. Condensation of 2,2'-bi(1H-indolyl)-3,3'-dicarbaldehyde with aliphatic diamines produced Schiff’s base type compounds possessing a 10–14-membered ring