Silver Triflate Catalyzed Tandem Heterocyclization/Alkynylation of 1-((2-Tosylamino)aryl)but-2-yne-1,4-diols to 2-Alkynyl Indoles
作者:Srinivasa Reddy Mothe、Prasath Kothandaraman、Sherman Jun Liang Lauw、Samuel Ming Wei Chin、Philip Wai Hong Chan
DOI:10.1002/chem.201200578
日期:2012.5.14
Don't cross me! 2‐Alkynyl indoles were prepared efficiently by the AgOTf‐catalyzed tandem heterocyclization/alkynylation of 1‐(2‐tosylamino)aryl)but‐2‐yne‐1,4‐diols under mild conditions (see scheme). The attractiveness of this approach lies in the fact that both the indole ring and alkyne side chain of the N‐heterocycle are sequentially formed from low cost, readily available, and ecologically benign
不要越过我!在温和的条件下,通过AgOTf催化1-(2-甲苯磺酰基氨基)芳基)-2-炔-1,4-二醇的串联杂环化/炔基化反应,可以高效地制备2-炔基吲哚。这种方法的吸引力在于,N-杂环的吲哚环和炔烃侧链都是由低成本,易得且生态友好的起始原料依次形成的。它也提供了不基于交叉偶联策略而获得此类具有合成价值的化合物的第一条途径。