2001年6月23日 · The formation of benzoin (Ph-CHOH-CO-Ph) from two molecules of benzaldehyde, catalyzed by 3-benzyl-5- (2-hydroxyethyl)-4-methylthiazolium bromide in …

Steady-state kinetic and structure–activity studies of a series of six triazolium-ion pre-catalysts 2a–2f were investigated for the benzoin condensation. These data provide quantitative insight …

1989年4月20日 · Kinetic analysis of our results reveals that, in addition to thiazolium ylid, ylid dimers also play a significant role as catalytic intermediates in the thiazolium salt-catalyzed …

As an example, specific mechanistic investigations by Leeper into the thiazolium ion-catalyzed benzoin reaction of benzaldehyde in buffered MeOH (NEt3:NEt3·HCl 2:1) employed an initial …

Herein, we report an IRM-study of the triazolium cata-lysed reaction, under true catalytic conditions, and a struc-ture –activity study of reaction data. A polar, protic MeOH environment …

2014年8月15日 · A novel thiazolium with a sulfonate charge tag was synthesized to test the feasibility of tracking the progress of a thiazolylidene-catalyzed benzoin condensation reaction …

Thieme Verlag Stugart · New York Comment: Reactions such as pyruvate decarbox-ylation and benzoin addition can also be catalyzed by enzymes using similar thiazolium ions (vitamin B1, …

2004年4月12日 · We now report the modeling of stereoselective benzoin condensations catalyzed by thiazolium and triazolium salts by using quantum mechanical methods. Over the last three …

2020年11月8日 · The original mechanistic proposal by Breslow [24] for thiazolium-catalyzed benzoin reaction can be described as follows: the reaction involves polarity reversal …

The Stetter reaction and the benzoin condensation have similar mechanisms both going through the formation of the widely described Breslow intermediate. For the Stetter reaction, the 1,4 …