846540-92-9Relevant academic research and scientific papers
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 dibenzo[b,d]pyran-6-ones based on a '[3+3] cyclization-Suzuki cross-coupling' strategy
Nguyen, Van Thi Hong,Langer, Peter
, p. 1013 - 1015 (2007/10/03)
Functionalized dibenzo[b,d]pyran-6-ones were prepared by sequential '[3+3] cyclization-Suzuki cross-coupling' reactions.
