Highly Diastereoselective α-Hydroxylation of Fox Chiral Auxiliary-Based Amide Enolates with Molecular Oxygen
作者:Hodney Lubin、Arnaud Tessier、Grégory Chaume、Julien Pytkowicz、Thierry Brigaud
DOI:10.1021/ol100211s
日期:2010.4.2
Using a trifluoromethylated oxazolidine (Fox) chiral auxiliary, the hydroxylation reaction of enolates was very efficiently performed under smooth and friendly conditions with molecular oxygen as oxidizer. This reaction occurred with an extremely high diastereoselectivity. After cleavage, the chiral auxiliary is efficiently recovered and highly valuable enantiopure oxygenated carboxylic acids and alcohols
使用三氟甲基化的恶唑烷(Fox)手性助剂,在光滑,友好的条件下,以分子氧作为氧化剂,可以非常有效地进行烯醇盐的羟基化反应。该反应以极高的非对映选择性发生。裂解后,有效地回收了手性助剂,并释放出高度有价值的对映纯氧化羧酸和醇。