Catalytic Asymmetric 1,2-Difunctionalization of Indolenines with α-(Benzothiazol-2-ylsulfonyl) Carbonyl Compounds
作者:You-Dong Shao、Dao-Juan Cheng
DOI:10.1002/adsc.201700187
日期:2017.8.7
2-difunctionalization reaction of indolenines with α-(benzothiazol-2-ylsulfonyl) carbonyl compounds was developed. By employing the strategy of Brønsted acid-assisted chiral phosphoric acid catalysis, the Mannich addition/Smiles rearrangement cascade occurred smoothly and provided a new family of optically active 1,2-difunctionalized 2-substituted indolines in good yields and enantioselectivities.
建立了吲哚与α-(苯并噻唑-2-基磺酰基)羰基化合物的新型催化不对称1,2-双官能团反应。通过采用布朗斯台德酸辅助手性磷酸催化的策略,曼尼希加成/微笑重排级联反应顺利进行,并以高收率和对映选择性提供了新的光学活性的1,2-双官能化2-取代的二氢吲哚。