Greater variety in Groebke–Blackburn type 3-arylaminoimidazo[1,2-a]azines accessed via Pd-catalyzed arylation of a primary amine precursor
摘要:
The scope of the Groebke-Blackburn reaction of 2-aminoazines is limited by the availability of isocyanides. To prepare the Groebke-Blackburn type 2-phenyl-3-(hetero)arylaminoimidazo[1,2-a]azines, for which the respective (hetero)arylisocyanides are scarce or unavailable, a general Pd-catalyzed protocol has been developed that is useful for the arylation of known 2-phenylimidazo[1,2-a]pyridin-3-amine and 2-phenylimidazo[1,2-a]pyrazin-3-amine with various electron-deficient aryl and heteroaryl halides. (C) 2008 Elsevier Ltd. All rights reserved.
Microwave-accelerated three-component condensation reaction on clay: solvent-free synthesis of imidazo[1,2-a] annulated pyridines, pyrazines and pyrimidines
作者:Rajender S. Varma、Dalip Kumar
DOI:10.1016/s0040-4039(99)01585-3
日期:1999.10
A rapid one-pot synthesis of imidazo[1,2-a] annulated pyridines, pyrazines and pyrimidines is described that occurs in the presence of recyclable montmorillonite K 10 clayundersolvent-freeconditions using microwaveirradiation.
描述了咪唑并[1,2- a ]环化吡啶,吡嗪和嘧啶的快速一锅合成,该反应在可回收的蒙脱土K 10粘土存在下,无溶剂条件下使用微波辐射进行。
Greater variety in Groebke–Blackburn type 3-arylaminoimidazo[1,2-a]azines accessed via Pd-catalyzed arylation of a primary amine precursor
The scope of the Groebke-Blackburn reaction of 2-aminoazines is limited by the availability of isocyanides. To prepare the Groebke-Blackburn type 2-phenyl-3-(hetero)arylaminoimidazo[1,2-a]azines, for which the respective (hetero)arylisocyanides are scarce or unavailable, a general Pd-catalyzed protocol has been developed that is useful for the arylation of known 2-phenylimidazo[1,2-a]pyridin-3-amine and 2-phenylimidazo[1,2-a]pyrazin-3-amine with various electron-deficient aryl and heteroaryl halides. (C) 2008 Elsevier Ltd. All rights reserved.
Singh, Rahul; Pandrala, Mallesh; Malhotra, Sanjay V., Journal of the Indian Chemical Society, 2020, vol. 97, # 8, p. 1237 - 1244