reusable Pd-catalyzed mono and double Mizoroki–Heckreactions of aryl halides and dialkyl vinylphosphonates using iPr2NH as a base in aqueous medium under air were developed. For aryl iodides, the reaction could be conducted at 80 °C under a low catalyst loading (0.1–1 mol%). When aryl bromides were applied, however, a greater amount of catalyst (5 mol%) and a longer reaction time at 120 °C were required.
Synthesis and Characterization of Pd exchanged MMT Clay for Mizoroki-Heck Reaction
作者:Vivek Srivastava
DOI:10.1515/chem-2018-0065
日期:2018.6.20
cation exchange process. We characterized all the synthesized Pd@MMT clays using sophisticated analytical techniques before testing them as a heterogeneous catalyst for the Mizoroki - Heck reaction (mono and double). The highest yield of the Mizoroki-Heck reaction product was recovered using thermally stable and highly reactive Pd@ MMT-1 clay catalyst in the functionalized ionic liquid reaction medium
1,2-Bifuctional thiocyanodiphenylphosphinoylation of alkenes is established through the phosphinoyl radical addition followed by Cu-catalyzed thiocyanation. This one-pot reaction is applicable to a range of aromatic, aliphatic, and cyclic alkenes to afford thiocyanodiphenylphosphinoylated compounds in satisfactory yields.
Gilmore, Franklin W.; Park, Joon Sup, Phosphorus and Sulfur and the Related Elements, 1987, vol. 29, p. 287 - 292
作者:Gilmore, Franklin W.、Park, Joon Sup
DOI:——
日期:——
Organoselenium-catalyzed vicinal dichlorination of unsaturated phosphonates
Diphenyl diselenide (PhSeSePh) was effective as a pre-catalyst for the vicinal dichlorination of α,β-unsaturated phosphonates with sulfuryl chloride. The reaction conditions were mild and the desired products were formed in up to 93% yield and moderate diastereoselectivity (10 : 1). The important diphenylselenium dichloride intermediate was obtained and characterized by X-ray crystallography.