<i>N</i>-(Diazoacetyl)oxazolidin-2-thiones as Sulfur-Donor Reagents: Asymmetric Synthesis of Thiiranes from Aldehydes
作者:Israel Cano、Enrique Gómez-Bengoa、Aitor Landa、Miguel Maestro、Antonia Mielgo、Iurre Olaizola、Mikel Oiarbide、Claudio Palomo
DOI:10.1002/anie.201204771
日期:2012.10.22
Sulfur tyranny: Thiiranes, instead of oxiranes, can be obtained in a highly stereoselective manner through the cycloaddition reaction of N‐acyl oxazolidine tethered diazo thione compounds with aldehydes catalyzed by RhII. Thus, this reaction provides versatile adducts S functionalized at both the α and β position, with concomitant generation of two contiguous stereocenters.
硫暴:通过N-酰基恶唑烷系链的重氮硫酮化合物与Rh II催化的醛类的环加成反应,可以以高度立体选择性的方式获得噻烷类而不是肟类。因此,该反应提供了在α和β位置均被官能化的通用加合物S,并伴随产生两个连续的立体中心。