87732-48-7

Upstream product

• 87732-47-6 1,4-Dihydro-1-(4-methylphenylsulfonyl)-4-<(4-methylphenylsulfonyl)phenylmethylen>pyridin 

Downstream Products

• 96859-74-4 1-(Trifluoromethansulfonyl)-4-(p-toluensulfonyl)-phenylmethylen-1,4-dihydropyridin 
• 114643-81-1 Trifluoro-methanesulfonate4-[phenyl-(toluene-4-sulfonyl)-methyl]-1-trimethylsilanyl-pyridinium; 
• 95377-91-6 1-Benzoyl-1,4-dihydro-4-<(4-methylphenylsulfonyl)phenylmethylen>pyridin 
• 87732-47-6 1,4-Dihydro-1-(4-methylphenylsulfonyl)-4-<(4-methylphenylsulfonyl)phenylmethylen>pyridin 
• 116665-03-3 4-<(4-Methylphenylsulfonyl)phenylmethyl>pyridin-Natrium 
• 95377-92-7 1,4-Dihydro-(4-methylbenzoyl)-4-<(4-methylphenylsulfonyl)phenylmethylen>pyridin 
• 116665-08-8 1,4-Dihydro-1-methyl-4-<(4-methylphenylsulfonyl)phenylmethylen>pyridin 
• 116665-09-9 4-[1-Phenyl-1-(toluene-4-sulfonyl)-ethyl]-pyridine 
• 116665-05-5 4-[Phenyl-(toluene-4-sulfonyl)-methylene]-4H-pyridine-1-carboxylic acid ethyl ester 
• 116665-04-4 (E)-3-Phenyl-1-{4-[phenyl-(toluene-4-sulfonyl)-methylene]-4H-pyridin-1-yl}-propenone 
• 116665-06-6 Bis-{4-[phenyl-(toluene-4-sulfonyl)-methylene]-4H-pyridin-1-yl}-methanethione 
• 114643-79-7 4-[Phenyl-(toluene-4-sulfonyl)-methyl]-1-trimethylsilanyl-pyridinium; iodide 

Relevant academic research and scientific papers

1-Acyl-4-alkylidene-1,4-dihydropyridines, 7. Activation with Boron Trifluoride: Intermolecular Acyl Group Transfer and Formation of 1-(4-Pyridyl)-2-alkanones

1-Acyl-4-alkylidene-1,4-dihydropyridines 5, representatives of the thermally stable enamides, can be activated by means of boron trifluoride 6, so the ketones 7 result from attack of 6 on 5 (intermolecular acyl group transfer).The mechanism of this reaction, which has not previously been observed for enamides, is strongly suggested to be as follows: 5 and 6 form first the adduct 21, which attacks 5 with formation of 27.Special examples of 5 (11 and 12) are found to be reactive enough that the ketone 7h or the sulfone 15 can be obtained from their isolable precursors (14 and 13) without Lewis-acid activation. 13 is particularly noteworthy: being the precursor of the salt 16, which is generated in situ, it serves as an extremely effective tosylating agent.Even tertiary alcohols are attackted by 16.