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.
Photochemical SET induced 1,4-conjugate additions of silyl phosphites to cyclic enones
Soma Sekhar,Bentrude, Wesley G.
, p. 1087 - 1090 (2007/10/03)
Irradiation of cyclic enones 5-8 in the presence of Me3SiOP(OMe)2 or Me3SiOP(OEt)2 gives phosphonosilylation products of 1,4-conjugate addition which are hydrolyzed to the phosphonoketones 11-14 in 82-92% isolat
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.
TRIMETHYLALUMINUM PROMOTED CONJUGATE ADDITIONS OF DIMETHYLPHOSPHITE TOα,β-UNSATURATED ESTERS AND KETONES
Green, Kenneth
, p. 4807 - 4810 (2007/10/02)
The effective conjugate addition of a dimethyl phosphonate moiety to α,β-unsaturated esters and ketones is described.This addition is promoted specifically by trimethylaluminum and does not occur with other Lewis acids which have been examined to date.