86429-48-3

Upstream product

• 4285-42-1 N-phenyl-N-methylcarbamoyl chloride 
• 19493-09-5 Methylenetriphenylphosphorane 
• 2620-05-5 N-methyl-2-chloroacetanilide 
• 100-61-8 N-methylaniline 
• 90277-09-1 triphenylphosphoniumchlorid 

Downstream Products

• 82390-60-1 N-Methyl-1,2-propadien-1-carboxanilid 
• 121525-25-5 N-Methyl-4,4-pentamethylen-2,3-butadienanilid 
• 104438-76-8 N-Methyl-N'-(1-naphthyl)-N-phenyl(triphenylphosphoranyliden)malondiamid 

Relevant academic research and scientific papers

Cycloadditions, 7. Intramolecular Diels-Alder Reactions of Allenecarboxanilides; Variation of the Substituents in the p-Position of the Aniline Nucleus

The N-methyl-1,2-propadiene-1-carboxanilides 6a-h, differently substituted in the p-position, are synthesized by Wittig reaction of the carbamoylmethylenephosphoranes 5 with ketene.They isomerize by thermolysis in boiling xylene to give the tricycles 7a-h, the products of the intramolecular Diels-Alder reaction, and in some cases also to the quinolones 9, the products of a cyclization reaction.The order of the reaction and the influence of the substituents upon the rate of the intramolecular Diels -Alder reaction are determined by 1H-NMR spectroscopy.

Ethynylphosphonium Salts, 2. A New Method for the Preparation of Ethynyltriphenylphosphonium Salts

The reaction between substituted (benzoylmethylene)- and (carbamoylmethylene)triphenylphosphoranes and the adduct of bromine to triphenylphosphane in the presence of triethylamine gives rise to the formation of (phenylethynyl)- resp. (aminoethynyl)triphen