Heteroatom directed ortho-metallation of 2-tert-butyldimethylsilyl-4-methoxybenzo[b]thiophene and 2-tert-butyldimethylsilyl-4-carbamoyloxybenzo[b]thiophene has been followed by quenching with electrophiles. Anionic ortho-Fries rearrangement has been carried out on 4-carbamoyloxybenzo[b]thiophene. The rearranged product has been used as the starting material in the synthesis of a novel linearly fused thienoisochromene.
对 2-叔丁基二甲基
硅基-4-
甲氧基苯并[b]
噻吩和 2-叔丁基二甲基
硅基-4-
氨基甲酰氧基苯并[b]
噻吩进行异位原子定向正
金属化,然后用亲电体进行淬火。对 4-
氨基甲酰氧基苯并[b]
噻吩进行了阴离子正-弗里斯重排。重排产物被用作合成新型线性融合
噻吩异色烯的起始原料。