156047-98-2

Upstream product

• 156047-72-2 5-Chloro-3-hydroxy-3-((E)-3-methyl-2-oxo-4-phenyl-but-3-enyl)-1,3-dihydro-indol-2-one 
• 156047-78-8 5-Chloro-3-[(E)-3-methyl-2-oxo-4-phenyl-but-3-en-(E)-ylidene]-1,3-dihydro-indol-2-one 
• 17630-76-1 5-chloroindole 2,3-dione 
• 42968-14-9 (E)-3-methyl-4-phenyl-3-buten-2-one 
• 541-41-3 chloroformic acid ethyl ester 
• 156047-84-6 5-Chloro-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.