156047-99-3

Upstream product

• 156047-73-3 5-Bromo-3-hydroxy-3-{2-oxo-3-[1-phenyl-meth-(E)-ylidene]-pentyl}-1,3-dihydro-indol-2-one 
• 156047-79-9 5-Bromo-3-[2-oxo-3-[1-phenyl-meth-(E)-ylidene]-pent-(E)-ylidene]-1,3-dihydro-indol-2-one 
• 87-48-9 5-Bromo-1H-indole-2,3-dione 
• 69390-24-5 (E)-3-ethyl-4-phenyl-3-buten-2-one 
• 541-41-3 chloroformic acid ethyl ester 
• 156047-85-7 5-Bromo-3-{2-oxo-3-[1-phenyl-meth-(E)-ylidene]-pentyl}-1,3-dihydro-indol-2-one 

Downstream Products

• 156048-06-5 6-Bromo-3-ethoxycarbonyloxy-2-ethyl-1-phenyl-carbazole-9-carboxylic acid ethyl ester 

Relevant academic research and scientific papers

Synthesis of the Carbazole Alkaloids Hyellazole and 6-Chlorohyellazole and Related Derivatives

We described a new seven-stage synthesis of the carbazole alkaloids hyellazole and 6-chlorohyellazole, which proceeds via thermal cyclization of the 3-(buta-1,3-dienyl)indoles 7ab and 7bb, prepared from the condensation products of indole-2,3-diones 1a, b and the 3-methyl-4-phenylbut-3-en-2-one 2b.This procedure was also used to prepare related 3-methoxy-1-phenylcarbazole derivatives.