Spontaneous aldol and Michael additions of simple enoxytrimethylsilanes in DMSO
作者:Yves Génisson、Liliane Gorrichon
DOI:10.1016/s0040-4039(00)00725-5
日期:2000.6
Activation of simple trimethylsilyl ketene acetals by dipolar aprotic solvents has been evidenced, allowing efficient solvent assisted aldol and Michaeladditions under extremely simple, mild and metal free conditions.
Reformatsky-type addition of esters of α-halogeno carboxylic acids to aldehydes and ketones in the presence of Fe(CO)5
作者:A. B. Terent'ev、T. T. Vasil'eva、N. A. Kuz'mina、E. I. Mysov、N. S. Ikonnikov、N. Yu. Kuznetsov、Yu. N. Belokon
DOI:10.1007/bf02496013
日期:1999.6
Reformatsky-type addition of esters of α-halogeno carboxylic acids to aldehydes and ketones in the presence of Fe(CO)5 and an activating agent (CBrCl3 or I2) afforded the corresponding esters of β-hydroxy acids in good yields. Possible reaction mechanisms are discussed.
Synthesis of β-Hydroxy Esters from Ketene Acetals and Aldehydes or Ketones. An Acidic Alternative for the Reformatsky Reaction and Crossed Aldol Condensation