Improved Procedure for the Reductive Acetylation of Acyclic Esters and a New Synthesis of Ethers
作者:David J. Kopecky、Scott D. Rychnovsky
DOI:10.1021/jo9914521
日期:2000.1.1
acetylation procedure allows a wide variety of esters to be converted into the corresponding alpha-acetoxy ethers in good to excellent yields. It was found that, under mild acidic conditions, many alpha-acetoxy ethers can be further reduced to the corresponding ethers. This net two-step ester deoxygenation is an attractive alternative to the classical Williamson synthesis for certain ethers.
描述了用于无环酯和二酯的DIBALH还原乙酰化的优化方案。该还原性乙酰化方法可以将多种酯以良好或优异的产率转化为相应的α-乙酰氧基醚。发现在弱酸性条件下,许多α-乙酰氧基醚可以进一步还原成相应的醚。对于某些醚,这种净的两步酯脱氧是经典威廉姆森合成的一种有吸引力的替代方法。