55001-10-0Relevant articles and documents
PS-BEMP as a basic catalyst for the phospha-Michael addition to electron-poor alkenes
Strappaveccia, Giacomo,Bianchi, Luca,Ziarelli, Simone,Santoro, Stefano,Lanari, Daniela,Pizzo, Ferdinando,Vaccaro, Luigi
supporting information, p. 3521 - 3525 (2016/04/19)
PS-BEMP was used as a heterogeneous catalyst for the phospha-Michael addition of phosphorus nucleophiles to a variety of electron-poor alkenes. The addition reactions were generally performed with equimolar amounts of reagents under solvent free conditions. The protocol proved to be very efficient for the addition to aromatic, non-aromatic and cyclic ketones, giving good yields (78-85%) in all cases. The protocol was also extended with good results to α,β-unsaturated esters and nitriles. This demonstrates that PS-BEMP is a good catalyst for the phospha-Michael addition to electron-poor alkenes.
Trimethylsilyl triflate promoted 1,4-addition of silyl phosphites to cyclic enones
Mori, Ichiro,Kimura, Yoko,Nakano, Toshihito,Matsunaga, Shin-Ichiro,Iwasaki, Genji,Ogawa, Atsuko,Hayakawa, Kenji
, p. 3543 - 3546 (2007/10/03)
A catalytic amount of trimethylsilyl triflate (TMSOTf) remarkably facilitates the selective conugate addition of a variety of silyl phosphites, prepared in situ from dialkyl phosphites and N,O-bis(trimethylsily)acetamide, to cyclic enones giving 1,4-adducts in high yields.
