91752-77-1Relevant articles and documents
A N - 2 - pyridine -5 - pyrimidine preparation of method (by machine translation)
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Paragraph 0033; 0038, (2018/09/11)
The invention belongs to the technical field of agricultural chemical intermediates, in particular to a N - 2 - pyridine - 5 - pyrimidine preparation of method. The preparation method is to cheap and easily obtained 3 - ethoxy - 2 - methyl acrolein as the starting material, with 25% ammonia reaction, to obtain 3 - amino - 2 - methyl acrolein; then with the formamide cyclized, to obtain 5 - methyl pyrimidine; in a carbon tetrachloride solution N - bromo succinimide bromide to obtain 5 - bromo methyl pyrimidine; then under the action of the triethylamine, with 2 - aminopyridine reaction to obtain N - 2 - pyridine - 5 - pyrimidine methylamine. The invention realized through designing a brand new N - 2 - pyridine - 5 pyrimidine methylamine preparation process route, in order to 3 - ethoxy - 2 - methyl acrolein as the starting material, through the ammoniation, cyclization, to obtain the bromide 5 - bromo methyl pyrimidine, then with 2 - aminopyridine reaction to obtain the target product; this invention adopts the cheap and easy to obtain 3 - ethoxy acrolein, in conventional process compared with the use of expensive 5 - pyrimidine formaldehyde, and greatly reduces the production cost. (by machine translation)