“…Subjecting 1,1-diphenyl ethylene to 1a under the standard conditions gave the 1,2-dithiocyanation product 5b [(1,2-dithiocyanatoethane-1,1-diyl)dibenzene], which could be isolated and characterized by 1 H NMR and ESI-QTOF-HRMS studies, suggesting that the in situ generated thiocyanate radical (˙SCN) or thiocyanogen (SCN) 2 from ammonium thiocyanate was the common intermediate during the reaction (Scheme 2, iii). 17 c ,27 To understand the role of water in hydrogenation (C3N4), a deuterium-labeling experiment was performed (Scheme 2, iv). When the electrolysis of 1a was conducted in a CH 3 CN/D 2 O (4.8: 0.2) mixed solvent under the standard conditions, 3a- D (>95% D incorporation) bearing a deuterium atom at the C3-center was isolated.…”