86118-58-3

Upstream product

• 14182-15-1 S-benzyldimethylsulfonium bromide 
• 959-23-9 4'-methoxychalcone 
• 41570-67-6 1-benzyltetrahydro-1H-thiophen-1-ium bromide 
• 100-39-0 benzyl bromide 
• 100-52-7 benzaldehyde 
• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 6832-17-3 2-diazo-1-(4-methoxyphenyl)ethanone 
• 22966-19-4 trans-4'-methoxychalcone 
• 1103-87-3 benzaldehyde triphenylphosphoranylidenehydrazone 

Relevant academic research and scientific papers

Radical Cation Cyclopropanations via Chromium Photooxidative Catalysis

The chromium photocatalyzed cyclopropanation of diazo reagents with electron-rich alkenes is described. The transformation occurs under mild conditions and features specific distinctions from traditional diazo-based cyclopropanations (e.g., avoiding β-hydride elimination, chemoselectivity considerations, etc.). The reaction appears to work most effectively using chromium catalysis, and a number of decorated cyclopropanes can be accessed in generally good yields.

Generation of Diastereomeric Cyclopropanes from Benzylidenesulfuranes and Chalcones

The reaction of the benzylidenesulfuranes 2, available by deprotonation of the benzylsulfonium bromides 1, with chalcones 3, which are substituted in the aroyl part, leads to the stereoisomeric cyclopropanes 4 and 5.The stereochemistry of 4 and 5 is elucidated by spectroscopy.A carbenic mechanism of formation of 4 and 5 is excluded experimentally.