Catalytic Three-Component Domino Reaction for the Preparation of Trisubstituted Oxazoles
作者:Henrik v. Wachenfeldt、Philipp Röse、Filip Paulsen、Nagarajan Loganathan、Daniel Strand
DOI:10.1002/chem.201300019
日期:2013.6.10
end, an efficient gold‐catalyzed three‐component domino reaction to form oxazoles directly from imines, alkynes, and acid chlorides is presented. The reaction proceeds in a single synthetic step by using a gold(III)–N,N′‐ethylenebis(salicylimine) (salen) catalyst to give trisubstituted oxazoles in up to 96 % yield. The substrate scope, a mechanistic study exploring the role of the gold catalyst, and the
多组分反应对于组装官能化的杂环化合物是有吸引力的。为此,提出了一种有效的金催化三组分多米诺反应,直接由亚胺,炔烃和酰氯形成恶唑。该反应通过使用金(III)–N,N'-亚乙基双(水杨酰亚胺)(salen)催化剂在单个合成步骤中进行,从而以最高96%的收率得到三取代的恶唑。讨论了底物范围,探索金催化剂作用的机理研究以及恶唑产物的合成应用。