Preparation of <i>β</i>-Keto Esters and <i>β</i>-Diketones by C-Acylation/Deacetylation of Acetoacetic Esters and Acetonyl Ketones with 1-Acylbenzotriazoles
作者:Alan R. Katritzky、Zuoquan Wang、Mingyi Wang、Chavon R. Wilkerson、C. Dennis Hall、Novruz G. Akhmedov
DOI:10.1021/jo049274l
日期:2004.10.1
Acyl-, aroyl-, and heteroaroyl-acetic esters 6a−f and 8a−l are prepared by reactions of 1-acylbenzotriazoles 1a−k with acetoacetic esters 5 or 7a,b in the presence of sodium hydride followed by regioselective deacetylation. Similar C-acylation/deacetylation of acetylacetone and benzoylacetone affords β-diketones 10a−d and 13a−c, respectively.
酰基,芳酰基和杂芳基乙酸酯6a - f和8a - 1通过在氢化钠存在下1-酰基苯并三唑1a - k与乙酰乙酸酯5或7a,b反应,然后进行区域选择性脱乙酰反应制得。乙酰丙酮和苯甲酰丙酮的类似的C-酰化/脱乙酰基分别提供β-二酮10a - d和13a - c。