Synthesis and substrate-controlled reactions of 2,2′-unsaturated biquinazolinones
作者:Fabrizio Pertusati、Eva Nutz、Benson M. Kariuki、Michael P. Coogan
DOI:10.1016/j.tet.2016.11.060
日期:2017.1
of BiQuinazolinones bearing either double or triple bonds in their lateral chains have been synthesized. These compounds were then subjected to substrate-controlled reactions such as Diels-Alder, epoxidation and Pauson-Khand reactions. The stereoselective outcome observed in these transformations is very promising for the future application of BiQuinazolinones as chiral auxiliaries.
A Facile and Chemoselective Synthesis of Novel Pyrimido[5,4‐
<i>b</i>
][1,4]thiazines by
<i>exo</i>
‐dig Iodocyclization Reactions
作者:Rashmi Sharma、Chander Mohan
DOI:10.1002/jhet.2773
日期:2017.5
The present manuscript involves the synthesis of 5‐prop‐2‐ynylsulfanyl‐pyrimidin‐4‐ones 3a–i by [4 + 2] cycloaddition reactions of 1,3‐diazabuta‐1,3‐dienes 1a–i with prop‐2‐ynyl‐sulfanyl ketene 2. These 5‐prop‐2‐ynylsulfanyl‐pyrimidin‐4‐ones 3a–i were explored in iodocyclization for the synthesis of novel pyrimido[5,4‐b][1,4]thiazines 4a–i in excellent yields. The iodocyclizations followed exo‐dig
本手稿涉及通过1,4-二氮杂丁烯-1,3-二烯1a-i与prop-2的[4 + 2]环加成反应合成5-prop-2-炔基硫基嘧啶-4-ones 3a-i。炔基-硫烷基烯酮2。在碘环化中探索了这些5-丙-2-炔基硫基嘧啶-4-酮3a-i,以优异的产率合成新型嘧啶并[5,4- b ] [1,4]噻嗪4a-i。所述iodocyclizations随后的外切挖闭环环化,得到6-6双环稠合的嘧啶酮,而对应内切-Dig闭环iodoamination未观察到。
Pourcelot,G.; Cadiot,P., Bulletin de la Societe Chimique de France, 1966, p. 3016 - 3024
作者:Pourcelot,G.、Cadiot,P.
DOI:——
日期:——
Pinho Melo, Teresa M. V.; Barbosa, Dalia M.; Ramos, Paulo J. R. S., Journal of the Chemical Society. Perkin transactions I, 1999, # 9, p. 1219 - 1223
作者:Pinho Melo, Teresa M. V.、Barbosa, Dalia M.、Ramos, Paulo J. R. S.、Rocha Gonsalves, Antonio M.、Gilchrist, Thomas L.、Beja, Ana M.、Paixaeo, Jose A.、Silva, Manuela R.、Veiga, Luiz Alte Da
DOI:——
日期:——
Facile synthesis and regioselective thio-Claisen rearrangements of 5-prop-2-ynyl/enyl-sulfanyl pyrimidinones: transformation to thienopyrimidinones
作者:Chander Mohan、Parvesh Singh、M.P. Mahajan
DOI:10.1016/j.tet.2005.08.074
日期:2005.11
A successful generation and utilization of prop-2-ynyl/enyl-sulfanyl ketene in the synthesis of previously unknown pyrimidinones and their thio-Claisen rearrangements leading to thienopyrimidinones is described. (c) 2005 Elsevier Ltd. All rights reserved.