91459-30-2

Upstream product

• 120533-54-2 9-phenacylidene-4-azafluorene 
• 536-74-3 phenylacetylene 
• 98-86-2 acetophenone 
• 3882-46-0 5H-indeno[1,2-b]pyridin-5-one 
• 180587-13-7 9-bromo-9-(α-bromophenacyl)-4-azafluorene 
• 87446-06-8 9-Phenylethynyl-4-azafluoren-9-ol 

Relevant academic research and scientific papers

Spiro compounds with fragments of 4-azafluorene-[indeno(2,3-e)-1,2-dihydropyridine] and pyrazoline

9-Phenacylidene-4-azafluorene and 9-bromo-9-(α-bromophenacyl)-4-azafluorene have been used in the synthesis of spiro compounds with fragments of substituted pyrazolines. 1-Methyl-2-oxo-5-phenacylidene-indeno[2,3-e]-1,2-dihydropyridine and hydrazine gave 1

PREPARATION OF 9-PHENYLETHYNYL-4-AZAFLUOREN-9-OL AND 9-PHENACYLIDENE-4-AZAFLUORENE AND THEIR CONVERSION TO SPIRO COMPOUNDS

9-Phenylethynyl-4-azafluoren-9-ol, which was obtained from 4-azafluorenone and phenylethynylmagnesium iodide, was used in syntheses of isomeric 9-phenacylidene-4-azafluorenes and spiro compounds with indene, indan, and pyrazoline fragments.It is assumed that conversion of 9-phenacylidene derivatives to spiro compounds takes place via intramolecular substitution.