Vinylphosphonates 3 could be prepared with E-selectivity by the condensation of diethyl methylyhosphonate 1 with a series of carbonyl compounds using diethyl chlorophosphate.
A new entry to β-hydroxyphosphonates: the SmI2-mediated reaction of diethyl iodomethylphosphonate with carbonyl compounds
作者:Fulvia Orsini、Alessandro Caselli
DOI:10.1016/s0040-4039(02)01539-3
日期:2002.9
In the presence of samarium iodide α-halophosphonates react with aliphatic carbonylcompounds (aldehydes and ketones) to afford β-hydroxyphosphonates in fairly good yields under neutral and mild conditions. Lower yields are obtained with aromatic carbonylcompounds.