A Fluorous-Tagged Linker from Which Small Molecules Are Released by Ring-Closing Metathesis
作者:Stuart G. Leach、Christopher J. Cordier、Daniel Morton、Gordon J. McKiernan、Stuart Warriner、Adam Nelson
DOI:10.1021/jo7026273
日期:2008.4.1
A fluorous-tagged linker for the parallel synthesis of small- and medium-ring and macrocyclic nitrogen heterocycles using ring-closingmetathesis is described. The linker was designed such that “cyclization−release” of the cyclic heterocyclic products was coupled with liberation of the active catalyst. The design of the linker was validated using a non-fluorous-tagged model. A wide range of unsaturated
描述了一种用于使用闭环复分解并行合成中小环和大环氮杂环的氟标记链接器。接头的设计使得环状杂环产物的“环化-释放”与活性催化剂的释放相结合。使用非氟标记模型验证接头的设计。使用多种不饱和醇作为试剂来官能化带氟标记的磺酰胺,( Z )- N -[4-(2-( N'-3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-十七氟癸基)-4-甲基磺酰氨基)甲基烯丙氧基]丁-2-烯基}-2-硝基苯磺酰胺,使用 Fukuyama-Mitsunobu 反应;在每种情况下,都使用氟固相萃取 (F-SPE) 从过量试剂中纯化功能化接头。一般来说,环状产物的“环化释放”是使用 Grubbs-Hoveyda 第二代催化剂的轻氟标记衍生物触发的。在复分解步骤之后,F-SPE 用于纯化从含氟标签的接头和含氟标签的催化剂中释放的环状化合物。该方法的范围和局限性是使用一系列底物确定的,这些底物探测了
A Fluorous-Tagged “Safety Catch” Linker for Preparing Heterocycles by Ring-Closing Metathesis
作者:Catherine O’Leary-Steele、Christopher Cordier、Jerome Hayes、Stuart Warriner、Adam Nelson
DOI:10.1021/ol802848j
日期:2009.2.19
fluorous-tagged “safety catch” linker is described for the synthesis of heterocycles with use of ring-closing metathesis. The linker facilitiates the purification of metathesis substrates, the removal of the catalyst, the functionalization of the products, and the release of only metathesis products. The synthesis of a range of heterocycles is described.