through quorumsensing (QS), which is an intercellular communication system mediated by the binding of signaling molecules to QS receptors such as LasR. In this study, a range of dihydropyrrolone (DHP) analogues were synthesized via the lactone-lactam conversion of lactone intermediates. The synthesized compounds were tested for their ability to inhibit QS, biofilm formation and bacterial growth of
An efficient, economical, and practical Reformatsky reaction of α-halo carbonylcompounds with aldehydes/ketones by using cheap and commercial iron(0) powder as reaction mediator is developed. The reactions proceeded effectively in the presence of a catalytic amount of iodine (20 mol %) to afford the synthetically useful β-hydroxyl carbonylcompounds in moderate to good yields.
Indolinylmethanol catalyzed enantioselective Reformatsky reaction with ketones
作者:Ning Lin、Miao-Miao Chen、Ren-Shi Luo、Yan-Qiu Deng、Gui Lu
DOI:10.1016/j.tetasy.2010.11.004
日期:2010.12
A series of chiral indolinylmethanol ligands have been applied for the first time in the asymmetric Reformatskyreaction of an α-bromoester with ketones. In the presence of NiBr2 and zinc powder, up to 75% yield and 87% ee were obtained for a variety of aromatic and aliphatic ketones. The use of Ni(acac)2 resulted in 96% ee although the corresponding yield was low. This process provided a convenient