作者:Satwinder Singh、Goutam Das、Om V. Singh、Hyunsoo Han
DOI:10.1021/ol062712l
日期:2007.2.1
[reaction: see text] The syntheses of bicyclic diaminopyridines 3 and 4 and tricyclic triaminopyridines 5 and 6, two novel series of nucleophilic catalysts, are described. Arguments are made for predicting the superiority of these catalysts over DMAP and even 2, the best esterification catalyst reported to date. The efficiencies of DMAP, PPY, and 2-6 in catalyzing the esterification of tertiary alcohols
[反应:见正文]描述了双环二氨基吡啶3和4以及三环三氨基吡啶5和6的合成,这是两种新型的亲核催化剂。为了预测这些催化剂相对于DMAP甚至是迄今为止报道的最佳酯化催化剂2的优越性,人们进行了争论。比较了DMAP,PPY和2-6在催化叔醇酯化反应中的效率。如预测的那样,5和6的效率是DMAP的约6倍,略优于2。