3557-57-1

Upstream product

• 79-46-9 2-nitropropane 
• 86018-86-2 1-benzyl-2-(1'-naphthyl)-4,6-diphenylpyridinium triflate 
• 94-41-7 benzalacetophenone 
• 614-47-1 1,3-diphenyl-propen-3-one 
• 941-98-0 1'-naphthacetophenone 
• 110-89-4 piperidine 

Relevant academic research and scientific papers

2- and 4-(α-Substituted Aryl)pyridines as Leaving Groups in SN2 Reactions and Radicaloid Nucleophilic Displacements.

Compared with 2,4,6-triphenylpyridine, 2,6-diphenyl-4-(o-substituted phenyl)pyridines as leaving groups in the radicaloid nucleophilic displacement reaction with 2-nitropropanide anion slow down C.T.C. formation. o-Substitution of the 2-phenyl group has little effect on this reaction.The latter modification however decreases SN2 rates of the corresponding pyridiniums with piperidine.

Boron Trifluoride as a Cyclodehydrating Agent: Synthesis of Nitrogen Heterocycles via Pyrylium Tetrafluoroborates

Pyrylium cations (1-12,Z = O+) have been prepared in high yields by the interaction of chalkones (in slight excess) and different ketones using BF3-etherate as cyclodehydrating agent or from 1,5-diketones in the presence of HBr and chalkone as hydrogen abstractor.The pyrylium cations have been converted into the corresponding nitrogen heterocycles (1-12;Z=N).