A simple solid phase diversity linker strategy using enol phosphonates
作者:Ian B. Campbell、Jun Guo、Edward Jones、Patrick. G. Steel
DOI:10.1039/b411111g
日期:——
Polymer bound lactam enol phosphonates can be easily generated using simple phenol on polystyrene resin. These stable, storable compounds can be released in a diversity cleavage strategy, using Suzuki cross coupling conditions, to provide 2-arylenamides in moderate to good overall yields.
Enol Phosphinates and Phosphonates: Practical Electrophiles for Cross-Coupling Strategies
作者:Patrick Steel、Tom Woods
DOI:10.1055/s-0029-1217067
日期:2009.11
Enol phosphinates and phosphonates can be readily prepared from simple lactams in high yields and are both stable and storable. Both these substrates can be employed successfully in homogeneous Suzuki-Miyaura and Stille cross-couplings protocols. Additionally, the phosphonate group can be immobilised on a phenol-on-polystyrene resin and utilised in a simple diversity linker strategy in which the coupled
Phosphinates as new electrophilic partners for cross-coupling reactions
作者:Jun Guo、John D. Harling、Patrick G. Steel、Tom M. Woods
DOI:10.1039/b809577a
日期:——
The use of enol phosphinates as electrophiles for cross-coupling reactions has been explored. Both boronic acids (Suzuki–Miyaura reaction) and stannanes (Stille reaction) couple efficiently with lactam derived phosphinates.
range of readily available α-phosphateenamides were subjected to (hetero)aromatic dioxazaborocanes (DABO boronates), providing the desired α-functionalized enamides in high yields via palladium-catalyzed cross-coupling reactions. Notably, the reaction proceeds in the presence of a slight excess of boron derivatives and tolerates cyclic, nonaromatic and/or electron-rich enamides.