Synthesis of 2-Amino-3,4-dihydroquinazolines and Imidazo[2,1-b]quinazoline-2-ones¹
作者:Sanjay Batra、Amita Mishra
DOI:10.1055/s-0029-1217603
日期:2009.9
SN2 reaction of a primary amine on the Baylis-Hillman acetate derived from 2-nitrobenzaldehyde, cyanogen bromide-mediated nitrile addition, and iron-acetic acid promoted reductive cyclization. This approach is also applied to the preparation of imidazo[2,1-b]quinazoline-2-ones and imidazo[2,1-b]quinazolines in one pot. quinazoline - anagrelide - Baylis-Hillman - imidazo[2,1-b]quinazoline -allyl amine
公开了由Baylis-Hillman衍生物合成2-氨基-3,4-二氢喹唑啉的直接方法。该方案涉及伯胺在源自2-硝基苯甲醛的Baylis-Hillman乙酸酯上的顺序S N 2反应,溴化氰介导的腈加成反应以及铁乙酸促进的还原环化反应。该方法也适用于在一锅中制备咪唑并[ 2,1- b ]喹唑啉-2-ones和咪唑并[2,1- b ]喹唑啉。 喹唑啉-Anagrelide-Baylis-Hillman-咪唑并[2,1- b ]喹唑啉-烯丙基胺 CDRI通讯第7780号。
Simple and one-pot synthesis of tri and tetracyclic frameworks containing [1,8]naphthyridin-2-one moiety from the Baylis–Hillman adducts
作者:Deevi Basavaiah、Kanumuri Ramesh Reddy
DOI:10.1016/j.tet.2009.12.033
日期:2010.2
A facile synthesis of tri and tetracyclic frameworks containing [1,8]naphthyridin-2-one skeleton from the Baylis–Hillman alcohols via the Johnson–Claisen rearrangement, followed by the treatment with Fe/AcOH in simple one-pot multi-step process is described.
Reductive-Cyclization-Mediated Synthesis of Fused Polycyclic Quinolines from Baylis-Hillman Adducts of Acrylonitrile: Scope and Limitations
作者:Virender Singh、Samiran Hutait、Sanjay Batra
DOI:10.1002/ejoc.200900336
日期:2009.7
The synthesis of a variety of polycyclicquinolines is described. The target molecules were obtained in two steps by an initial reductive cyclization followed by another intramolecular cyclization in the allylamines afforded from either the acetates or allyl bromides of Baylis–Hillmanadducts of 2-nitrobenzaldehydes and acrylonitrile. The two steps proceeded in one-pot for those substrates in which