1749-21-9

Upstream product

• 4756-25-6 (9H-fluoren-9-ylidene)triphenylphosphorane 
• 103-71-9 phenyl isocyanate 

Downstream Products

• 72478-85-4 2-Fluoren-9-ylidene-4-(4-methoxy-phenyl)-3-phenyl-3,4,5,6-tetrahydro-2H-naphtho[2,1-e][1,3]thiazine 
• 72478-82-1 C₃₈H₂₉NOS 
• 72478-86-5 4-(4-Chloro-phenyl)-2-fluoren-9-ylidene-3-phenyl-3,4,5,6-tetrahydro-2H-naphtho[2,1-e][1,3]thiazine 
• 72478-83-2 C₃₇H₂₆ClNS 
• 76345-37-4 C₄₀H₂₈N₂O₂S₂ 
• 76345-31-8 C₄₀H₂₈N₂O₂S₂ 
• 72478-79-6 2-Fluoren-9-ylidene-3,4,6-triphenyl-3,4-dihydro-2H-[1,3]thiazine 
• 72478-77-4 C₃₅H₂₅NS 
• 72478-78-5 C₃₆H₂₇NOS 
• 72478-80-9 2-Fluoren-9-ylidene-6-(4-methoxy-phenyl)-3,4-diphenyl-3,4-dihydro-2H-[1,3]thiazine 

Relevant academic research and scientific papers

A convenient synthesis of ketenimines from thioamides with haloiminium salts

Ketenimines were conveniently synthesized from N-monosubstituted thioacetamides with dehydrating agents such as 2-chloro-1,3- dimethylimidazolinium chloride or 2-chloro-1-methylpyridinium iodide.

Thione S-Imide. Reaction with Heterocumulenes

9-Fluorenethione S-p-toluenesulfonimide reacted with diphenylketene to give two regioisomeric 1,3-dipolar cycloadducts.The thione S-imide and symmetrical dialkylcarbodiimides produced 3-tosylimino-1,2,4-thiadiazolidines.In the reaction with ketenimines, there occurred siteselective cycloaddition reactions on C=N vs.C=C bonds in the imines and further rearrangement of the 1,2,4-thiadiazolidine adducts.

Chemistry of α,β-Unsaturated Thione Dimers. 3. Reactions of Thiochalcones and 2-Arylidene-1-thiotetralones with Cumulenes Containing a Carbon-Carbon Double Bond

Thiochalcone, 4'-methoxythiochalcone, 2-benzylidene-1-thiotetralone, 2-(p-methoxybenzylidene)-1-thiotetralone, and 2-(p-chlorobenzylidene)-1-thiotetralone generated by the thermolysis of the corresponding thione dimer reacted as dienes with the cumulenes diphenylketene, fluorenylideneketene N-phenylimine, and tetraphenylallene.The reactions with diphenylketene and the allene gave the six-membered adduct via addition of the thione to the carbon-carbon double bond of the ketene and the allene.The reaction with the ketene imine gave two kinds of six-membered adducts: those via addition to the carbon-carbon double bond and those via addition to the carbon-nitrogen double bond.