The first rhodium-catalyzed annulation of N-benzoylsulfonamide (1) with isocyanide (2) through CiH activation is described. The transformation is broadly compatible with N-benzoylsulfonamides as well as isocyanides with different electronic properties. From a practical point of view, this method provides the most straightforward approach to a series of 3-(imino) isoindolinones (3). Ts=4-toluenesulfonyl.
- CiH activation
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