A Practical, One-Pot Multicomponent Synthesis of α-Amidosulfides and Their Application as Latent N-Acylimines in the Friedel-Crafts Reaction
作者:Nicolas George、Mathieu Bekkaye、Géraldine Masson、Jieping Zhu
DOI:10.1002/ejoc.201100426
日期:2011.7
A novel one-pot, three-component synthesis of N-acyl or N-carbamoyl-alpha-amidosulfides 4 is described. The three-component reaction of aldehydes 1, primary carbamates (or amides) 2 and phenylsulfinic acid (6a) afforded alpha-amidosulfones 7, which after addition of sodium thiolate were in situ transformed into stable alpha-amidosulfides 4 in good to excellent yields. We demonstrated that silver salts
描述了一种新型的 N-酰基或 N-氨基甲酰基-α-酰胺硫化物 4 的一锅三组分合成。醛 1、伯氨基甲酸酯(或酰胺)2 和苯亚磺酸 (6a) 的三组分反应得到 α-酰胺砜 7,在加入硫醇钠后原位转化为稳定的 α-酰胺硫化物 4,产率良好至极好。我们证明银盐或布朗斯台德酸能够在温和条件下以定量产率促进脂肪族和芳香族 N-酰基亚胺的形成。磷酸催化的 3-取代吲哚与 α-酰胺硫化物 4 的 Friedel-Crafts 烷基化反应也被记录在案,导致 2,3-二取代的吲哚。