反应详情

温度

75 °C

A mixture of 5.4 parts of ethyl (2-chloroethyl)carbamate, 19 parts of N-(4-piperidinyl)-1-(4-thiazolylmethyl)-1H-benzimidazol-2-amine trihydrobromide monohydrate, 15 parts of sodium carbonate, 0.2 parts of sodium iodide and 90 parts of N,N-dimethylacetamide was stirred overnight at about 75° C. Water was added and the product was extracted with 4-methyl-2-pentanone. The extract was dried, filtered and evaporated, yielding 14 parts of ethyl [2-[4-[[1-(4-thiazolylmethyl)-1H-benzimidazol-2-yl]amino]-1-piperidinyl]ethyl]carbamate as an oily residue (intermediate 133)

1. extractionthe product was extracted with 4-methyl-2-pentanone
2. customThe extract was dried
3. filtrationfiltered
4. customevaporated