313227-71-3

Upstream product

• 204388-77-2 N-(2-iodo-2-propenyl)-p-toluenesulfonamide 
• 313227-81-5 methyl (2E,4E)-6-bromo-3-phenyl-2,4-hexadienoate 
• 35660-91-4 (E)-1-phenyl-2-buten-1-one 
• 74312-60-0 methyl (2E,4E)-3-phenyl-2,4-hexadienoate 
• 70-55-3 toluene-4-sulfonamide 

Relevant academic research and scientific papers

Novel intramolecular [4 + 1] and [4 + 2] annulation reactions employing cascade radical cyclizations

Tributyltin hydride and tris(trimethylsilyl)silane promote sequential/cascade free radical cyclization reactions of dienoate tethered vinyliodides or alkynes. These processes produce [4 + 1] and [4 + 2] annulated products. In contrast, the electrochemical reductions of the vinyliodides afford monocyclic compounds. Both the regiochemical and stereochemical courses of the sequential radical cyclizations strongly depend on substrate structure. Especially important is the balance between steric and stereoelectronic (Baldwin's rules) factors that serve to control cyclization regiochemistry.

Novel intramolecular (4 + 1) and (4 + 2) annulations of halopolyenes by cascade radical reaction

(matrix presented) Free radical reaction of vinyl iodides having dinenoate function in the presence of tributyltin hydride or tris(trimethylsilyl)silane caused a sequential cyclization reaction to produce (4 + 1) and (4 + 2) annulated compounds by means o