Morpholine → 4-Morpholinecarbothioamide

Participants

Reaction Steps

To a stirred solution of 1,1′-thiocarbonyldiimidazole (10.0 g, 56.1 mmol) in THF (150 mL) was added morpholine (4.2 g, 4.2 mL, 48.7 mmol). The reaction mixture was then stirred for 72 h at r.t. before it was concentrated in vacuo to 30 mL and NH3 (60.0 mL, 2.0M in MeOH) was added. The reaction mixture was stirred at r.t. in a sealed flask for 18 h, filtered and the resultant solid washed with Et2O to give the title compound (2.0 g, 28%) as a white solid that was used without further purification. δH (DMSO-d6) 7.46 (2H, br. s), 3.82-3.61 (4H, m), 3.60-3.53 (4H, m).

Provenance & Evidence