Synthesis of Functionalized Acetophenones by Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with 3-Alkoxyand 3-Silyloxy-2-acetyl-2-en-1-ones
作者:Rüdiger Dede、Abdolmajid Riahi、Mohanad Shkoor、Mirza A. Yawer、Ibrar Hussain、Nazken Kelzhanova、Zharylkasyn A. Abilov、Abiodun Falodun、Helmar Görls、Peter Langer
DOI:10.5560/znb.2013-3123
日期:2013.9.1
cyclization of 1,3-bis(silyloxy)-1,3-butadienes with 2-acetyl-1-silyloxybut-1- en-3-one and 3-acetyl-4-silyloxypent-3-en-2-one, readily available from 3-(formyl)acetylacetone and 3-(acetyl)acetylacetone (triacetylmethane), afforded a variety of functionalized acetophenones Graphical Abstract Synthesis of Functionalized Acetophenones by Formal [3+3] Cyclocondensations of 1,3-Bis(silyloxy)-1,3-butadienes with
Synthesis of 4-hydroxy- and 2,4-dihydroxy-homophthalates by [4+2] cycloaddition of 1,3-bis(silyloxy)-1,3-butadienes with dimethyl allene-1,3-dicarboxylate
作者:Ibrar Hussain、Mirza A. Yawer、Bettina Appel、Muhammad Sher、Ahmed Mahal、Alexander Villinger、Christine Fischer、Peter Langer
DOI:10.1016/j.tet.2008.05.118
日期:2008.8
The reaction of 1,3-bis(trimethylsiloxy)-1,3-butadienes with dimethyl allene-1,3-dicarboxylate provides a convenient and regioselective approach to a variety of functionalized 4-hydroxy- and 2,4-dihydroxy-homophthalates.
Synthesis of functionalized acetophenones by [3+3] cyclizations of 1,3-bis-silyl enol ethers with 2-acetyl-3-silyloxyalk-2-en-1-ones
作者:Rüdiger Dede、Peter Langer
DOI:10.1016/j.tetlet.2004.10.104
日期:2004.12
The TiCl4 mediated cyclization of 1,3-bis-silylenolethers with 2-acetyl-1-silyloxybut-1-en-3-one and 3-acetyl-4-silyloxypent-3-en-2-one, readily prepared from 3-formyl(acetylacetone) and triacetylmethane, afforded a variety of functionalized acetophenones.
Regioselective synthesis of functionalized homophthalates by cyclizations of 1,3-bis-(trimethylsiloxy)-1,3-butadienes with α-allenylesters
作者:Peter Langer、Bettina Kracke
DOI:10.1016/s0040-4039(00)00682-1
日期:2000.6
Reaction of 1,3-bis-(trimethylsiloxy)-1,3-butadienes with α-allenylesters resulted in regioselective formation of functionalized homophthalates which represent useful building blocks for natural product syntheses.