Me 3 P-catalyzed addition of hydrogen phosphoryl compounds P(O)H to electron-deficient alkenes: 1 to 1 vs 1 to 2 adducts
作者:Tian-Zeng Huang、Tieqiao Chen、Yuta Saga、Li-Biao Han
DOI:10.1016/j.tet.2017.10.070
日期:2017.12
Trimethyl phosphine was used as an efficient catalyst for the addition of P(O)-H compounds to electron-deficient alkenes. The addition reactions were generally conducted using a catalytic amount of Me3P under mild reaction conditions. Both 1 to 1 and 1 to 2 adducts were obtained.
Facile Preparation of (Phosphorylalkyl)-Functionalized Cyclopropanols and Cyclopropylamines
作者:Harald Winsel、Vesta Gazizova、Oleg Kulinkovich、Valeriy Pavlov、Armin de Meijere
DOI:10.1055/s-1999-2972
日期:1999.12
The reactions of esters 1 and dialkylamides 8 of 3-phosphorylpropionic acids with Grignard reagents 6 in the presence of titanium tetraisopropoxide 5 or methyltitanium triisopropoxide 11 give 1-substituted and 1,2-disubstituted phosphorylated cyclopropanols 7 and cyclopropylamines 12 in moderate to very good yields (37-71 and 39-86%, respectively). These useful transformations convincingly demonstrate