作者:James E. Taylor、Matthew D. Jones、Jonathan M. J. Williams、Steven D. Bull
DOI:10.1021/jo202647f
日期:2012.3.16
synthesized from 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and the corresponding acyl chloride in the presence of sodium tetraphenylborate. The salts have been shown to be effective N-acylating agents, reacting with primary amines, secondary amines, and sulfonamides to form the corresponding N-acylated products in good yields. The DBN hydrotetraphenylborate byproduct can be conveniently removed by filtration
在四苯硼酸钠存在下,由1,5-二氮杂双环[4.3.0] non-5-ene(DBN)和相应的酰氯合成了空气稳定的结晶N-酰基DBN四苯基硼酸盐。所述盐已显示为有效的N-酰化剂,其与伯胺,仲胺和磺酰胺反应以高收率形成相应的N-酰化产物。可以通过过滤方便地除去DBN氢四苯硼酸酯副产物,无需进一步纯化即可提供纯正的N-酰化产物。该ñ-酰基DBN四苯基硼酸盐是酰基卤的有吸引力的替代物,因为它们可以存储在空气中而不分解,避免在酰化反应过程中产生游离酸,并且可以在更强的热条件下使用。