Enantioselectiveepoxidation of unfunctionalizedolefins with combined use of molecular oxygen, an oxidant, and pivalaldehyde, a reductant, was demonstrated in the presence of a catalytic amount of...
结合使用分子氧、氧化剂和新戊醛(一种还原剂)对未官能化烯烃的对映选择性环氧化反应在催化量的...
<i>N</i>-Alkyl lmidazoles as Effective Axial Ligands in the Aerobic Asymmetric Epoxidation of Unfunctionalized Olefins Catalyzed by Optically Active Manganese(III)-salen-type Complex
are effective axial ligands to achieve highly enantioselectiveepoxidation of unfunctionalizedolefins by combined use of molecular oxygen and pivalaldehyde with opticallyactive Mn(III)-salen-type complexcatalysts. In the presence of N-alkyl imidazole, the epoxidation of 2,2-dimethylchromene proceeded smoothly to afford the corresponding opticallyactive epoxide in 92% enantiomeric excess.
945. Hydrogen transfer. Part XIX. Dehydrogenation of substituted 1,2-dihydronaphthalenes by quinones, and the correlation of donor reactivity with the nature of substituents
作者:L. M. Jackman、D. T. Thompson
DOI:10.1039/jr9610004794
日期:——
Vinyl phosphonium bicycloannulation of cyclohexenones and its use in a stereoselective synthesis of trachyloban-19-oic acid
作者:Robert M. Cory、Dominic M. T. Chan、Yousry M. A. Naguib、Mary H. Rastall、Richard M. Renneboog
DOI:10.1021/jo01298a020
日期:1980.5
Costantino,A. et al., Bulletin de la Societe Chimique de France, 1970, p. 912 - 920