156047-75-5

Upstream product

• 91-56-5 indole-2,3-dione 
• 42968-14-9 (E)-3-methyl-4-phenyl-3-buten-2-one 
• 156047-69-7 3-Hydroxy-3-((E)-3-methyl-2-oxo-4-phenyl-but-3-enyl)-1,3-dihydro-indol-2-one 

Downstream Products

• 156047-92-6 2-Ethoxycarbonyloxy-3-((1Z,3E)-2-ethoxycarbonyloxy-3-methyl-4-phenyl-buta-1,3-dienyl)-indole-1-carboxylic acid ethyl ester 
• 156047-93-7 3-((E)-3-Methyl-2-oxo-4-phenyl-but-3-enyl)-2-oxo-2,3-dihydro-indole-1,3-dicarboxylic acid diethyl ester 
• 156047-81-3 3-((E)-3-Methyl-2-oxo-4-phenyl-but-3-enyl)-1,3-dihydro-indol-2-one 

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.