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SP 1 sp H NMR (400 MHz, CDCl SB 3 sb ): = 7.73-7.67 (m, 1 H), 7.60-7.58 (m, 2 H), 7.51-7.49 (m, 1 H), 7.34-7.29 (m, 2 H), 7.16 (d, I J i = 7.9 Hz, 2 H), 2.34 (s, 3 H). SP 1 sp H NMR (400 MHz, CDCl SB 3 sb ): = 8.46 (d, I J i = 5.2 Hz, 1 H), 7.68-7.66 (m, 1 H), 7.63-7.58 (m, 1 H), 7.43-7.41 (m, 2 H), 7.14-7.06 (m, 3 H), 2.31 (s, 3 H). SP 1 sp H NMR (400 MHz, CDCl SB 3 sb ): = 7.89 (d, I J i = 8.0 Hz, 1 H), 7.80 (d, I J i = 8.0 Hz, 1 H), 7.67-7.63 (m, 2 H), 7.46-7.42 (m, 1 H), 7.36-7.32 (m, 1 H), 7.06-7.02 (m, 2 H). SP 1 sp H NMR (400 MHz, CDCl SB 3 sb ): = 7.43 (d, I J i = 8.0 Hz, 2 H), 7.13 (d, I J i = 8.0 Hz, 2 H), 3.83 (t, I J i = 5.6 Hz, 2 H), 2.88-2.85 (m, 2 H), 2.32 (s, 3 H), 1.92 (s, 1 H). [Extracted from the article]

An efficient desulfurization C–O coupling reaction of 3,4-dihydropyrimidine-2(1 H)-thiones (including thioureas) with alcohols was developed under electrochemical oxidation conditions. Herein, transition--metal catalysts and additives are not required and the alcohol is both the solvent and the alkoxy donor. [ABSTRACT FROM AUTHOR]