demonstrate a greener borrowinghydrogen methodology using the π-benzylpalladium system, which offers an efficient and environmentally friendly dehydrative N-monobenzylation of 2-aminopyridines with benzylic alcohols in the absence of base. The crossover experiment using benzyl-α,α-d2 alcohol and 3-methylbenzyl alcohol afforded H/D scrambled products, suggesting that the dehydrative N-benzylation in our
我们证明了使用π-苄基钯体系的更绿色的借用氢方法,该方法可在不存在碱的情况下,用苄基醇对2-氨基吡啶进行高效,环保的N-单苄基脱水。使用苄基-α交叉的实验中,α- d 2醇和3-甲基苄基,得到H / d醇加扰的产品,这表明脱水Ñ在我们的催化系统中,苄基化涉及一个借用的氢途径。KIE实验表明,速率测定步骤涉及苯甲醇的苄基位置的C–H键断裂(KIE = 2.9)。这种简单的无碱方案可以在温和的条件下以原子经济的方法实现,以中等至极好的收率提供所需的产物。
Prolyl Hydroxylase Inhibitors
申请人:FITCH Duke M.
公开号:US20070213335A1
公开(公告)日:2007-09-13
The invention described herein relates to certain bicyclic heteroaromatic N-substituted glycine derivatives of formula (I)
which are antagonists of HIF prolyl hydroxylases and are useful for treating diseases benefiting from the inhibition of this enzyme, anemia being one example.