作者:W. Ried、Th. Russ
DOI:10.1055/s-1991-26521
日期:——
Homolytic acylation of methyl 3-amino-2-pyrazinecarboxylates 1a-c under standard Minisci conditions affords the corresponding 5- or 6-monoacylated pyrazines 3a-d or 4a,b in reasonable yields. With 1a, complete selectivity in favor of the 5-acyl products is observed.
在标准Minisci条件下,对1a-c的甲基3-氨基-2-吡唑-羧酸酯进行同裂解酰化反应,得到了相应的5-或6-单酰化吡唑化合物3a-d或4a,b,并获得了合理的产率。对于1a,观察到对5-酰化产物的完全选择性。