Syntheses and Structures of Stilbene Cycles. 2. Low-Valent Titanium-Induced Ring Closures of Aromatic Bis(carbonyls)

Article abstract of DOI:10.1021/jo00183a026

Low-valent titanium-induced reductive coupling has been used to prepare stilbene cycles.Bis(carbonyl) ethers, 1h-3h and 1m-3m, have been prepared from the reactions of salicylaldehyde (h) and 2-hydroxyacetophenone (m) with diethylene glycol ditosylate (1)