Synthesis of functionalized 2-(arylthio)benzoates by formal [3+3] cyclizations of 3-arylthio-1-silyloxy-1,3-butadienes with 3-silyloxy-2-en-1-ones and 1,3-diacylcyclopropanes
作者:Inam Iqbal、Muhammad Imran、Nasir Rasool、Muhammad A. Rashid、Munawar Hussain、Alexander Villinger、Christine Fischer、Peter Langer
DOI:10.1016/j.tet.2009.06.119
日期:2009.9
Functionalized 2-(arylthio)benzoates are prepared by formal [3+3] cyclizations of 3-arylthio-1-trimethylsilyloxy-1,3-butadienes with 3-silyloxy-2-en-1-ones and 1,1-diacylcyclopropanes.
Regioselective synthesis of functionalized 2-(phenylthio)benzoates by ‘[3+3] cyclization/homo-Michael’ reactions of 1-methoxy-1-trimethylsilyloxy-3-phenylthio-1,3-butadienes with 1,1-diacylcyclopropanes
作者:Muhammad A. Rashid、Inam Iqbal、Nasir Rasool、Muhammad Imran、Peter Langer
DOI:10.1016/j.tetlet.2008.02.025
日期:2008.4
2-(Phenylthio)benzoates containing a remote halide function are regioselectively prepared by ‘[3+3] cyclization/homo-Michael’ reactions of 1-methoxy-1-trimethylsilyloxy-3-phenylthio-1,3-butadienes with 1,1-diacylcyclopropanes.
Domino “[3+3]-Cyclization-Homo-Michael” Reactions of 1,3-Bissilyl Enol Ethers with 1,1-Diacylcyclopropanes
作者:Gopal Bose、Van Thi Hong Nguyen、Ehsan Ullah、Sunanda Lahiri、Helmar Görls、Peter Langer
DOI:10.1021/jo0485278
日期:2004.12.1
The Lewis acid mediated domino " [3+3] -cyclization-homo-Michael" reaction of 1,3-bissilyl enol ethers with 1,1-diacylcyclopropanes allows an efficient one-pot synthesis of functionalized salicylates containing a halogenated side chain. A great variety of substitution patterns could be realized by variation of the starting materials and of the Lewis acid. The mechanism of the domino process was studied.
Zefirov, N. S.; Kozhushkov, S. I.; Kuznetsova, T. S., Journal of Organic Chemistry USSR (English Translation), 1986, p. 95 - 105
作者:Zefirov, N. S.、Kozhushkov, S. I.、Kuznetsova, T. S.、Gleiter, R.、Eckert-Maksic, M.
DOI:——
日期:——
Synthesis, reactions and structure–activity relationships of 1-hydroxyspiro[2.5]cyclooct-4-en-3-ones: Illudin analogs with in vitro cytotoxic activity
作者:Gopal Bose、Karin Bracht、Patrick J. Bednarski、Michael Lalk、Peter Langer
DOI:10.1016/j.bmc.2006.03.037
日期:2006.7.15
1-Hydroxyspiro [2.5]cyclooet-4-en-3-ones-analogs of natural illudines-were prepared in good yields by cyclization of 1,3-dicarbonyl dianions or 1,3-bis-silyl enol ethers ('masked dianions') with 1,1-diacylcyclopropanes. Several spirocyclopropanes showed a significant antiproliferative activity against human leukemia HL60 cells in vitro. 1-Hydroxyspiro [2.5]cyclooct-4-en-3-ones represent highly reactive precursors of unstable spiro[5.2]cycloocta-4,7-dien-6-ones and reactions with a number of nucleophiles were studied. (c) 2006 Elsevier Ltd. All rights reserved.