Fig. 6: Reaction mechanism investigations.

a Control experiments and nonlinear effect investigation. b Proposed catalytic cycles. c Key intermediated detected by HRMS. TDMAIP tris(dimethylamino)iminophosphorane.

a Control experiments and nonlinear effect investigation. b Proposed catalytic cycles. c Key intermediated detected by HRMS. TDMAIP tris(dimethylamino)iminophosphorane.