Conformationally restricted 4-dimethylaminopyridine (DMAP) analogs: synthesis and evaluation of catalytic effectiveness
作者:Satwinder Singh、Goutam Das、Om V. Singh、Hyunsoo Han
DOI:10.1016/j.tetlet.2007.01.066
日期:2007.3
The syntheses of a series of conformationally restricted 4-dimethylaminopyridine (DMAP) analogs 1–3 are described. Evaluations of catalyst effectiveness demonstrated that 1 was the best catalyst for the acetylation reaction of a tertiary alcohol, while 2 and 3 were roughly comparable to DMAP. The order of effectiveness of these catalysts roughly parallels their acetylation enthalpies estimated from
的串联构象限制的4-二甲基氨基吡啶(DMAP)的合成类似物1 - 3中描述。催化剂有效性的评估表明,1是叔醇乙酰化反应的最佳催化剂,而2和3与DMAP大致相当。这些催化剂的有效性顺序大致与从头算计算得出的乙酰化焓平行。