The Smiles rearrangement was successfully applied to 4-hydroxybenzo[b]thiophene furnishing a facile entry to the 4-amino derivative. The rearrangement was extended to 5-methoxy-4-methoxycarbonyl[1]benzothieno[2,3-b]pyridine obtained via aza-Wittig/electrocyclization reaction of novel N-(4-methoxybenzothiophen-2-yl)iminomethyldiphenylphosphorane with methyl trans-4-oxo-2-pentenoate. The preparation
Smiles重排成功应用于4-羟基苯并[ b ]噻吩,可轻松进入4-氨基衍生物。重排扩展到5-甲氧基-4-甲氧基羰基[1]苯并噻吩并[2,3- b经由氮杂维蒂希的新颖/ electrocyclization反应获得]吡啶ñ - (4- methoxybenzothiophen -2-基)iminomethyldiphenylphosphorane用甲基反式- 4-氧-2-戊烯酸酯。成功地制备了新型的5-氨基-4-甲氧基羰基[1]苯并噻吩并[2,3- b ]吡啶,其作为潜在的二级肽结构模拟物而备受关注。