A Cheap and Efficient Oxidant ( n -Bu) 4 NNO 3 -Enabled C(sp 2 )- and C(sp 3 )-H Olefination at Room Temperature.

To further promote the widely practical application of C-H activation, developing green and mild reaction conditions has invariably been the objective of researchers, especially when it comes to remote C-H activation reactions. Herein, we report a new cheap and powerful ( n -Bu) 4 NNO 3 oxidant. This oxidant is efficient and universal for Pd(II)-catalyzed sp 2 and sp 3 C-H olefination and allows the reaction to be carried out at room temperature. Because of this, we attempted to make C-H functionalization more economical and environmentally benign.