This invention relates to a process for making an amide by directly reacting a ferf-butyloxycarbonyl or carboxybenzyl N substituted amine with a boroxine derivative in the presence of a rhodium(l) catalyst, in the presence of a solvent an optionally in the presence of a base. The process provides means to react protected amines to amides using th boroganic reagent without the deprotection of an amine such that it can be directly converted from protected form in on step, and results in good yields in amide formation even for sterically hindered amines. Potassium fluoride is the preferre base in the reaction run in dioxane. Typical rhodium catalysts that can be used include rhodium(l) complex monomer and dimers such as chloro(1,5-cyclooctadiene) rhodium(l) dimer ("[CI(cod)Rh]2") or bis(1,5-cyclooctadiene)rhodium(l trifluoromethanesulfonate ("(cod)2Rh(OTf)").
这项发明涉及一种通过在
铑(Ⅰ)催化剂存在下,在溶剂的存在下和/或在碱的存在下,直接将ferf-丁氧羰基或羧基苄基N-取代胺与
硼氧化物衍
生物反应,从而制备酰胺的方法。该过程提供了一种反应受保护胺制备酰胺的手段,使用
硼有机试剂而无需去保护胺,使得它可以直接从受保护形式转化为酰胺,即使对于立体位阻胺,也能在酰胺形成中获得良好产率。在
二氧六环中运行的反应中,
氟化
钾是首选碱。可用的典型
铑催化剂包括
铑(Ⅰ)配合物单体和二聚体,如
氯代(
1,5-环辛二烯)
铑(Ⅰ)二聚体("[CI(cod)Rh]2")或双(
1,5-环辛二烯)
铑(Ⅰ)
三氟甲磺酸盐("(cod)2Rh(OTf)")。