作者:Sean H. Kennedy、Mark N. Schaeff、Douglas A. Klumpp
DOI:10.1021/acs.joc.9b01437
日期:2019.11.1
Aromatic carboxylic acids are found to undergo reactions with isocyanates, wherein triflic acid promotes the formation of aromatic imide products in fair to good yields. It is proposed that the carboxylic acid group directs the isocyanate electrophile to the ortho-position. This is thought to occur by the formation of a temporary carbamic acid anhydride group, which cleaves upon ortho-functionalization
发现芳族羧酸与异氰酸酯反应,其中三氟甲磺酸以公平的至良好的产率促进芳族酰亚胺产物的形成。提出羧酸基团将异氰酸酯亲电子体引导至邻位。认为这是通过形成临时氨基甲酸酐基团而发生的,该氨基甲酸酯基团在邻官能化时裂解。合成了一系列酰亚胺产物,并合成了潜在的酪氨酸DNA磷酸二酯酶II选择性抑制剂。