添加 de Michael de Differents 亲核试剂 sur le phenylsulfonyl-2 cyclohexadiene-1,3、le phenylsulfonyl-3 butadiene-1,3 和 le phenylsulfonyl-2 pentadiene-1,3。Reaction de Diels-Alder entre plusieurs phenylsulfonyl-2 dienes-1,3 和某些 dienophiles comme l'丙烯酸酯 demethyle (les enamines et les ethers d'enol donnent des reactors hautement regioselectives)
Palladium-Catalyzed Substitution of Allylic Fluorides
作者:Amaruka Hazari、Véronique Gouverneur、John M. Brown
DOI:10.1002/anie.200804310
日期:2009.2.2
As unusual substrates for the Tsuji–Trost allylation reaction, allylicfluorides are responsive to palladium‐catalyzed substitution. Their activity towards this reaction fits in the series OCO2Me>OBz≫F≫OAc. The classic stereoretention mechanism that involves sequential inversions does not operate in this case. Several distinct cases are considered.
作为Tsuji–Trost烯丙基化反应的不常见底物,烯丙基氟化物对钯催化的取代反应敏感。它们对该反应的活性符合OCO 2 Me> OBz≫ F ≫OAc系列。在这种情况下,涉及顺序倒置的经典立体保留机制不起作用。考虑了几种不同的情况。
Asymmetric allylic alkylation of cycloalkenediol diacetates using a chiral phosphine ligand bearing a carboxyl group
Asymmetricinduction in the allylicalkylation of cycloalkenediol diacetates was performed using a chiral alkylphosphine ligand bearing a carboxyl group, 3-(diphenylphosphino)butanoic acid. An increase in enantiomeric excess of the monoalkylated products of cis-cycloalkenediol diacetates was observed through a sequential asymmetricallylic alkylation–kinetic resolution process.