Maitro Guillaume, Vogel Sophie, Sadaoui Mounel, Prestat Guillaume, Madec David, Poli Giovanni
Université Pierre et Marie Curie-Paris 6, Laboratoire de Chimie Organique (UMR CNRS 7611), Institut de Chimie Moléculaire (FR 2769), Case 183, 4 Place Jussieu, F-75252 Paris Cedex 05, France.
Org Lett. 2007 Dec 20;9(26):5493-6. doi: 10.1021/ol702343g. Epub 2007 Nov 23.
Arylation of various sulfenate anions generated from beta-sulfinyl esters by retro-Michael reaction in the presence of palladium(0) and enantiopure ligands gave the corresponding aryl sulfoxides in enantio-enriched form. The Josiphos-type ligand (R)-(S)-PPF-t-Bu2 turned out to be the best ligand tested, allowing ee's up to 83% in a predictable sense.
在钯(0)和对映体纯配体存在下,通过逆迈克尔反应从β-亚磺酰基酯生成的各种亚磺酸根阴离子进行芳基化反应,以对映体富集的形式得到相应的芳基亚砜。结果表明,Josiphos型配体(R)-(S)-PPF-t-Bu2是测试的最佳配体,在可预测的情况下,对映体过量率可达83%。