Palladium-Catalyzed anti-Hydrothiolation of 1-Alkynylphosphines
摘要:
Treatment of 1-alkynylphosphine with thiol in the presence of a catalytic amount of palladium acetate results in regio- and stereoselective anti-hydrothiolation, yielding the corresponding (Z)-1-phosphino-2-thio-1-alkene.
Palladium-Catalyzed <i>anti</i>-Hydrothiolation of 1-Alkynylphosphines
作者:Azusa Kondoh、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1021/ol0702876
日期:2007.3.1
Treatment of 1-alkynylphosphine with thiol in the presence of a catalytic amount of palladium acetate results in regio- and stereoselective anti-hydrothiolation, yielding the corresponding (Z)-1-phosphino-2-thio-1-alkene.
Copper-Catalyzed anti-Hydrophosphination Reaction of 1-Alkynylphosphines with Diphenylphosphine Providing (<i>Z</i>)-1,2-Diphosphino-1-alkenes
作者:Azusa Kondoh、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1021/ja070048d
日期:2007.4.1
nes and their sulfides. The reaction is highly chemoselective and can be performed even in an aqueous medium. The reaction is reliable enough to realize a gram-scale synthesis of (Z)-1,2-diphosphino-1-alkene. Radical reduction of the diphosphine disulfides with tris(trimethylsilyl)silane yields the parent trivalent diphosphines without suffering from the isomerization of the olefinic geometry. Enantioselective