Synthesis of P-stereogenic compounds based on the diastereoselective ortho-lithiation of phosphinimidic amides
作者:María Casimiro、Guilherme P. Guedes、María José Iglesias、Fernando López Ortiz
DOI:10.1016/j.tetasy.2014.12.001
日期:2015.1
quench reactions as a method for the preparation of structurally diverse P-stereogenic compounds is described. Transformations at both the phosphorus-containing and the ortho-functional groups provide access to a large variety of P-stereogenic derivatives with excellent stereocontrol. These transformations include aza-Wittig reactions, N-alkylations, methanolysis, nucleophilic displacements with Grignard
pH值的非对映官能的延伸2 C-手性的P组P,P -二苯基phosphinimidic酰胺通过定向邻-lithiation(DOLI)-electrophilic骤冷反应,作为结构不同的制备方法P -stereogenic化合物被描述。在两个含磷和变换的邻位官能化基团提供接入到大量的各种P-stereogenic衍生物具有优良的立体控制。这些转换包括氮杂维蒂希反应,N-烷基化,甲醇分解,用格氏试剂,氧化膦的减少,叠氮化物向胺的转化中,卤素/金属交换亲核置换,和Suzuki交叉偶联反应和缩合反应。这些转换增加官能基团的多样性在邻位二取代的苯基环,以及使合成对映体纯的邻甲酰基和邻-stannyl次膦酰胺,很难通过其他方法来制备。合成的新产品可能被用来作为构建模块,高附加值的建设P-stereogenic化合物。这是通过合成图示[1,5,2] diazaphosphinin-6(5 ħ) -酮2