Heteronaphthacenes 1 were prepared in two steps from 1,3-dihydrobenzo[c]thiophene 2,2-dioxide (4) and dienophiles 2 via convenient high-temperature Diels-Alder reactions.
Heteronaphthacenes 1在两个步骤中制备由1,3-二氢-苯并[ c ^ ]噻吩-2,2-二氧化物(4)和亲双烯体2 经由方便高温狄尔斯-阿尔德反应。