AbstractHere described an acid‐controlled regional diverse synthesized process of CF3‐containing ketoimines by the condensation of benzo[b]thiophene‐2,3‐dione and 2,2,2‐trifluoroethlamine. The imines obtained at either the 2‐position or 3‐position can be further used as substrates in asymmetric organocatalyzed [3+2]‐cycloaddition reactions, leading to a library of regiodiverse bispiro‐compounds with 85–96 % yield and 65–99 % ee.
摘要本文介绍了通过苯并[b]噻吩-2,3-二酮和 2,2,2-三氟乙胺缩合合成含 CF3 酮亚胺的酸控区域多样性过程。在 2 位或 3 位上得到的亚胺可进一步用作不对称有机催化 [3+2] - 环加成反应的底物,从而得到一个具有 85-96 % 收率和 65-99 % ee 的多区域双环化合物库。