General approach to 6-tosyl-2,3,4,5-tetrahydro-1H-1,3-diazepin-2-ones via nucleophile-mediated ring expansion of tetrahydropyrimidines
作者:Anastasia A. Fesenko、Marcus L. Tullberg、Anatoly D. Shutalev
DOI:10.1016/j.tet.2009.01.015
日期:2009.3
A general six-step approach to 6-tosyl-2,3,4,5-tetrahydro-1H-1,3-diazepin-2-ones has been developed. The key step involves a ring expansion reaction of 4-mesyloxymethyl- or 4-tosyloxymethyl-5-tosyl-1,2,3,4-tetrahydropyrimidin-2-one mediated by nucleophilic reagents.
已经开发了一种通常的六步法制备6-甲苯磺酰基-2,3,4,5-四氢-1 H -1,3-二氮杂-2--2-酮。关键步骤涉及由亲核试剂介导的4-甲磺酰氧基甲基-或4-甲磺酰氧基甲基-5-甲磺酰基-1,2,3,4-四氢嘧啶-2-酮的扩环反应。