Transition-Metal-Free Synthesis of Aryl-Substituted<i>tert</i>-Butyl Ynol Ethers through Addition/Elimination Substitution at an sp Centre
作者:Vincent J. Gray、Ben Slater、Jonathan D. Wilden
DOI:10.1002/chem.201203015
日期:2012.12.3
sulfonamide leads to displacement of the sulfonamide at the sp centre and isolation of the ynol ether in good yield in a single operation (see scheme). The mechanistic pathway has been probed by the use of coordinating additives, 13C‐labelling experiments and ab initio calculations, which indicated that an addition/elimination mechanism is in operation.
醇盐对炔基磺酰胺的亲核攻击会导致磺酰胺在sp中心发生置换,并在一次操作中以高收率分离出炔诺醚(请参见方案)。通过使用配位添加剂,13 C标记实验和从头算计算已经探究了该机理途径,这表明添加/消除机理正在发挥作用。