A Clean, Facile, and Stereospecific
Synthesis of α-Oxoketene <i>O</i>,<i>S</i>-Acetals in Water
作者:Qian Zhang、Qun Liu、Yan Li、Xin Cheng、Xiaohong Xu
DOI:10.1055/s-0028-1083333
日期:——
A facile and practical method for the stereospecific synthesis of α-oxoketene O,S-acetals in water has been developed. Catalyzed by tetrabutylammonium bromide at room temperature, the one-pot reaction of various β-dicarbonyl compounds, 2-bromoethanol, and carbon disulfide, in the presence of potassium carbonate, leads to the corresponding α-oxoketene O,S-acetals stereospecifically in good to excellent
开发了一种简便实用的方法,用于在水中立体定向合成α-氧杂环丁烯O,S-乙缩醛。在室温下,由四丁基溴化铵催化,在碳酸钾的存在下,各种β-二羰基化合物,2-溴乙醇和二硫化碳的一锅法反应生成相应的α-氧杂环丁烯O,S-乙缩醛立体定向性良好。高产。在分离有机产物之后,可以将水相中的催化剂再循环。 α-氧杂环丁烯O,S-缩醛-一锅合成-立体定向-溴化四丁铵-水