作者:Thorsten Bach、Florian Vogt、Kai Jödicke、Jürgen Schröder
DOI:10.1055/s-0029-1217095
日期:——
aromatic aldehydes and silyl enol ethers in benzene as the solvent. The reactions occur with high simple diastereoselectivity and, when R¹ is chiral, with high facial diastereoselectivity. Under similar conditions, but in acetonitrile rather than benzene as the preferred solvent, the Paternò-Büchi reaction of N-acyl enamines (enamides) gives the corresponding protected 3-aminooxetanes. The cis-products
3-(甲硅烷氧基)氧杂环丁烷是通过将芳族醛和甲硅烷基烯醇醚的混合物辐照在作为溶剂的苯中获得的。反应以高的简单非对映选择性发生,而当R 1为手性时,则以高的面部非对映选择性发生。在相似的条件下,但在乙腈而不是苯中作为优选溶剂,N-酰基烯胺(酰胺)的Paternò-Büchi反应得到相应的保护的3-氨基氧杂环丁烷。获得的顺式产物具有明显的简单非对映选择性。 环加成-杂环-氧杂环丁烷-帕特诺-布奇反应-光化学