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
Cobalt-catalyzed arylation and alkenylation of alpha-bromo eneformamides and enecarbamates by cross-coupling with organic bromides: Application to the synthesis of functionalized piperidines and azepanes
作者:Daniel P. Bassler、Amir Alwali、Laura Spence、Oliver Beale、Timothy K. Beng
DOI:10.1016/j.jorganchem.2015.01.001
日期:2015.3
α-arylated and alkenylated piperidine and azepane derivatives has been accomplished through cross-coupling of α-bromo eneformamides or enecarbamates with feedstock organic halides such as aryl and vinyl bromides, under cobalt catalysis. The coupling products, which themselves are synthetic intermediates for accessing other functionalized piperidines and azepanes are obtained in good to excellent yields