A new application of diphenylphosphorylazide (DPPA) reagent: convenient transformations of quinolin-4-one, pyridin-4-one and quinazolin-4-one derivatives into the 4-azido and 4-amino counterparts
摘要:
Herein, we describe a transformation of the oxo-function of a series of quinolin/pyridin/quinazolin-4-ones into 4-azido and thence into 4-amino derivatives in moderate yields by a very short and convenient new procedure using DPPA (diphenylphosphoryl azide) as reagent. A mechanism for this interesting new application of DPPA is suggested based on the identification of some of the intermediates. (C) 2004 Elsevier Ltd. All rights reserved.
PEG 400在通过S一锅合成7- [4-烷基-或(杂)芳基-1 H -1,2,3-三唑-1-基]噻吩并[3,2- b ]吡啶中的应用N Ar和Cu(I)催化的叠氮化物-炔烃环加成反应及其抗肿瘤活性的初步评估
摘要:
几种新型的7- [4-烷基-或(杂)芳基-1 H -1,2,3-三唑-1-基]噻吩并[3,2- b ]吡啶是采用环保方法制备的。型溶剂PEG 400从7-氯噻吩并[3,2-一个一锅法中b ]吡啶以形成相应的叠氮化物通过小号ñ的Ar与NaN的3,随后的Cu(I)催化的叠氮化物-炔烃环加成加成(CuAAC)使用不同类型的炔烃 PEG 400中的一锅反应首次报道了从卤代杂芳族体系开始的炔烃,证明了其在炔烃中的广泛应用。使用制备的1,4-二(杂)芳基-1,2,3-三唑对人类肿瘤细胞系的初步抗肿瘤活性及其在非肿瘤细胞中的毒性进行了评估。在测试的化合物中,最有希望的化合物是2-乙炔基吡啶衍生物。