74477-69-3

Upstream product

• 108-94-1 cyclohexanone 
• 74477-64-8 3-Methoxy-1-methyl-4,5,6,7-tetrahydroindol-2-carbonsaeure-ethylester 
• 74477-63-7 3-Methoxy-4,5,6,7-tetrahydroindol-2-carbonsaeure-ethylester 
• 58074-24-1 3-Hydroxy-4,5,6,7-tetrahydro-2-indolcarbonsaeure-ethylester 
• 74477-61-5 2,3,4,5,6,7-Hexahydro-1-methylindol-3-on 
• 100-52-7 benzaldehyde 

Relevant academic research and scientific papers

Syntheses and Properties of Pyrrolindigo Compounds

4,4',5,5',6,6',7,7'-Octahydroindigo (9c), 4,4'-dibutyl-5,5'-dimethylpyrrolindigo (9a) and di(cyclopenta)pyrrolindigo (9d) as well as the condensation products from 2-pyrrolin-4-ones with benzaldehyde, isatin, glyoxale, and 2-methoxy-3-indolone, plus N-methyl- and N,N'-dimethylderivatives of 9c and tetrahydroindigo 31 were all synthesized and compared with other indigoids especially the corresponding benzoannelated compounds.The unusul behavior of N-methylindigoids is discussed.In the boron chelate 39 of 1-methyl-4,5,6,7-tetrahydroindigo the structure of a fixed tautomeric indigo is approached.