Photodimerizations of hydroxy- and benzoylated 4-azachalcones and quantum chemical investigation of the reactions

Photodimerization reactions of compounds 4–6 gave four new cyclobutane-containing compounds ( 7–9 ) with full control over the stereochemistry at the four stereogenic centers. These new cyclobutane-containing compounds had β -truxinic ( 7a ), δ -truxinic ( 7b and 9 ), and ε -truxillic ( 8 ) structur...

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