143982-40-5Relevant articles and documents
Toward the Synthesis of Sceptrin and Benzosceptrin: Solvent Effect in Stereo- and Regioselective [2+2] Photodimerization and Easy Access to the Fully Substituted Benzobutane
Binh Nguyen, Thanh,Anh Nguyen, Le,Corbin, Mathilde,Retailleau, Pascal,Ermolenko, Ludmila,Al-Mourabit, Ali
, p. 5861 - 5868 (2018/11/24)
By simply switching solvents, two sets of conditions for the total regio- and stereoselective photodimerization of (E)-3-(imidazo[1,2-a]pyrimidin-2-yl)acrylic acid [(E)-7a] have been found. In acetonitrile in the presence of benzophenone as photosensitizer or in cyclohexane, the head-to-head cis-trans-cis isomer 8a was the only observable cycloadduct. In DMSO, the head-to-head trans-trans-trans isomer 10a was obtained as the unique cycloadduct. The diester 9a, derived from 8a, was cyclized to the challenging, fully substituted diimidazobenzobutane system 13 present in benzosceptrins.
Synthesis and antibacterial activity of novel imidazo [1,2-A] Pyrimidin- 2-Yl) methylene) benzohydrazides
Shashikala,Laxminarayana,Thirumala Chary
, p. 119 - 122 (2019/01/16)
The present paper reports the synthesis and antibacterial activity of new imidazo [1, 2-a] pyrimidin-2-yl) methylene) benzohydrazides 5a-j from commercially available 2-aminopyrimidine as starting material. The imidazo [1, 2-a] pyrimidin-2-yl) methylene)
Synthese et Reactions SRN1 en Serie 3-Nitroimidazopyrimidine
Roubaud, Christine,Vanelle, Patrice,Maldonado, Jose,Crozet, Michel P.
, p. 9643 - 9656 (2007/10/02)
A new heterocyclic reductive alkylating agent, 2-chloromethyl-3-nitroimidazopyrimidine, is synthesized for the first time and shown to react under phase-transfer catalysis conditions with 2-nitropropane anion to give good yield of the C-alkylated derivative.Elimination of nitrous acid allows to obtain a new class of imidazopyrimidine derivatives bearing a trisubstituted ethylenic bond in the 2 position.The SRN1 mechanism of C-alkylation is confirmed by classical inhibition experiments by dioxygen, p-dinitrobenzene or TEMPO.