74581-96-7

Upstream product

• 1728-36-5 3-Brom-2-methoxy-1-cyclohexen 
• 603-35-0 triphenylphosphine 

Downstream Products

• 75624-66-7 1-<2-Methoxy-3-(triphenylphosphoranyliden)-1-cyclohexen-1-yl>ethanon 
• 6789-99-7 4,5,6,7-tetrahydro-1H-benzo[d][1,2,3]triazole 
• 75638-29-8 Triphenyl(4,5,6,7-tetrahydro-3-methyl-1-phenyl-1H-indazol-7-yl)phosphonium-chlorid 
• 75624-74-7 (3-Acetyl-2-oxocyclohexyl)triphenylphosphonium-chlorid 
• 75624-86-1 Triphenyl(4,5,6,7-tetrahydro-3-methyl-1H-indazol-7-yl)phosphonium-bromid 
• 75624-81-6 Triphenyl(4,5,6,7-tetrahydro-3-methyl-7-benzisoxazolyl)phosphonium-chlorid 
• 14714-05-7 4,5,6,7-Tetrahydro-3-methyl-1-phenyl-1H-indazol 
• 1967-99-3 4,5,6,7-Tetrahydro-3-methyl-1H-indazol 
• 24010-93-3 3-methyl-4,5,6,7-tetrahydro-1,2-benzisoxazole 
• 13273-33-1 2-(triphenylphosphoranylidene)cyclohexanone 

Relevant academic research and scientific papers

Reactions with Organophosphorus Compounds, XLV. A New Synthesis of (2-Oxocycloalkylidene)triphenylphosphoranes

The bromoenolethers 1, upon treatment with triphenylphosphorane in nitromethane, yield the cycloalkenylphosphonium salts 4, which on subsequent reaction with hydrochloric acid and sodium carbonate afford the (2-oxocycloalkylidene)phosphoranes 3.With methyl bromide the O-methyl derivatives 4 are reformed from compounds 3; with acetyl azide the condensed acyltriazoles 5 are obtained, which lead to the unsubstituted triazoles 6, when treated with KOH.Reaction of 3b with (SCN)2 yields the cycloheptene derivative 7b, which can be cyclized to the thiazole 8b.