846540-77-0Relevant academic research and scientific papers
Synthesis of biaryls, fluorenones, cyclopenta[def]phenanthren-4-ones, and benzophenones based on formal [3+3] cyclocondensations of 1,3-bis(silyloxy)buta- 1,3-dienes with 3-(silyloxy)-2-en-1-ones
Reim, Stefanie,Lau, Matthias,Adeel, Muhammad,Hussain, Ibrar,Yawer, Mirza A.,Riahi, Abdolmajid,Ahmed, Zafar,Fischer, Christine,Reinke, Helmut,Langer, Peter
experimental part, p. 445 - 463 (2009/07/25)
Functionalized fluorenones were efficiently prepared in four steps. The [3+3] cyclization of 1,3-bis(silyloxy)buta-1,3- dienes with 3-(silyloxy)-2-en-1- ones afforded salicylates that were transformed into their enol triflates. The Suzuki cross-coupling r
Synthesis of dibenzo[b,d]pyran-6-ones based on [3 + 3] cyclizations of 1,3-bis(silyl enol ethers) with 3-silyloxy-2-en-1-ones
Hussain, Ibrar,Nguyen, Van Thi Hong,Yawer, Mirza Arfan,Dang, Tuan Thanh,Fischer, Christine,Reinke, Helmut,Langer, Peter
, p. 6255 - 6258 (2008/02/09)
(Chemical Equation Presented) Functionalized dibenzo[b,d]pyran-6-ones were prepared by formal [3 + 3] cyclization of 1,3-bis(silyl enol ethers) with 3-silyloxy-2-en-1-ones or 1,1-diacetylcyclopropane to give functionalized salicylates, Suzuki cross-coupling reactions of the corresponding triflates, and subsequent BBr3-mediated lactonization. A second approach to dibenzo[b,d]pyran-6-ones relies on the [3 + 3] cyclization of 1,3-bis(silyl enol ethers) with 1-(2-methoxyphenyl)-1-(trimethylsilyloxy)alk-1-en-3-ones and subsequent BBr3-mediated lactonization.
Synthesis of 3-alkyl- and 3-chloroalkyl-2-hydroxybenzoates based on [3+3] cyclizations of 4-alkyl- and 4-chloroalkyl-1,3-bis(trimethylsilyloxy)buta-1,3- dienes
Van Nguyen, Thi Hong,Bellur, Esen,Appel, Bettina,Langer, Peter
, p. 1103 - 1110 (2007/10/03)
The TiCl4-mediated [3+3] cyclization of 4-alkyl- and 4-chloroalkyl-1,3-bis(trimethylsilyloxy)buta-1,3-dienes with 3-silylalk-2-en-1-ones afforded 3-alkyl- and 3-chloroalkyl-2-hydroxybenzoates, respectively; the latter containing a remote chlori
Synthesis of fluorenones based on a '[3+3] cyclization/Suzuki cross-coupling/Friedel-Crafts acylation' strategy
Reim, Stefanie,Lau, Matthias,Langer, Peter
, p. 6903 - 6905 (2007/10/03)
Functionalized fluorenones were prepared by sequential '[3+3] cyclization-Suzuki cross-coupling/Friedel-Crafts acylation' reactions.
