70% |
With potassium carbonate; In acetonitrile; at 0 - 20℃; for 8h; |
(1): Synthesis of N1-((2-chlorothiazol-5-yl)methyl)ethane-1,2-diamine To a stirred solution of 0.03mol of potassium carbonate and 10ml (0.15mol) of ethylenediamine in a 50ml of flask placed in an ice bath, 0.03mol of <strong>[105827-91-6]2-chloro-5-(chloromethyl)thiazole</strong> dissolved in 15ml of acetonitrile was added dropwise and slowly. After addition, the ice bath was removed and then the mixture was stirred for 8 hours at room temperature. After the reaction was stopped, a large amount of water was added to dissolve potassium carbonate and ethylenediamine, and the mixture was extracted with dichlormethane. The lower organic phase was collected, dried, and evaporated to dryness. The obtained product was yellow oily liquid in 70% yield. GC MS (m/s) 191 (21) M+, 132(100). |
70% |
With potassium carbonate; In acetonitrile; at 0 - 20℃; for 8h; |
(1): Synthesis of N1-((2-chlorothiazol-5-yl)methyl)ethane-1,2-diamine To a stirred solution of 0.03mol of potassium carbonate and 10ml (0.15mol) of ethylenediamine in a 50ml of flask placed in an ice bath, 0.03mol of <strong>[105827-91-6]2-chloro-5-(chloromethyl)thiazole</strong> dissolved in 15ml of acetonitrile was added dropwise and slowly. After addition, the ice bath was removed and then the mixture was stirred for 8 hours at room temperature. After the reaction was complete, a large amount of water was added to dissolve potassium carbonate and ethylenediamine, and the mixture was extracted with dichloromethane. The lower organic phase was collected, dried, and evaporated to dryness. The obtained product was yellow oily liquid in 70% yield. GC MS (m/s) 191 (21) M+, 132(100). |
70% |
With potassium carbonate; In acetonitrile; at 0 - 20℃; for 8h; |
EXAMPLE 7; Synthesis of 1-((2-chlorothiazol-5-yl)methyl)-7-methyl-8-nitro-1,2,3,5,6,7-hexahydroimidazo[1,2-a]pyridin-5-ol (compound 12)(1): Synthesis of N1-((2-chlorothiazol-5-yl)methyl)ethane-1,2-diamine To a stirred solution of 0.03 mol of potassium carbonate and 10 ml (0.15 mol) of ethylenediamine in a 50 ml of flask placed in an ice bath, 0.03 mol of <strong>[105827-91-6]2-chloro-5-(chloromethyl)thiazole</strong> dissolved in 15 ml of acetonitrile was added dropwise and slowly. After addition, the ice bath was removed and then the mixture was stirred for 8 hours at room temperature. After the reaction was complete, a large amount of water was added to dissolve potassium carbonate and ethylenediamine, and the mixture was extracted with dichloromethane. The lower organic phase was collected, dried, and evaporated to dryness. The obtained product was yellow oily liquid in 70% yield.GC MS (m/s) 191 (21) M+, 132 (100). |