Basicities of thiazole heterocyclic compounds and the reaction of 3-methyl-2-methylimino-Δ<sup>4</sup>-thiazolines with ethyl bromoacetate and 2-bromoacetophenone
作者:Dong Chan Kim、Kyung Ho Yoo、Kye Jung Shin、Sang Woo Park、Dong Jin Kim
DOI:10.1002/jhet.5570340110
日期:1997.1
The pKa′s of several thiazole heterocycliccompounds have been determined and represent products with significantly high values. Because of their high basicities, sometimes these compounds were able to act as not only nucleophiles but also strong organic bases. 4-Substituted-3-methyl-2-methylimino-Δ4-thiazolines 5a-d reacted with ethyl bromoacetate in refluxing benzene, giving the corresponding N-alkylated
已经确定了几种噻唑杂环化合物的p K a 's,它们代表具有很高值的产物。由于它们的高碱性,有时这些化合物不仅可以充当亲核试剂,而且还可以充当强有机碱。4-取代-3-甲基-2-甲基亚氨基-Δ 4 -thiazolines图5a-d在回流的苯,得到相应的与溴乙酸乙酯反应Ñ烷基化盐8A-d ,同时从反应用2-溴苯乙酮制得的产品碱的存在是吡咯并噻嗪10b-d。
Kaupp, Gerd; Schmeyers, Jens; Boy, Juergen, Advanced Synthesis and Catalysis, 2000, vol. 342, # 3, p. 269 - 280