作者:Kristin E. Price、Steven J. Broadwater、Brian J. Walker、D. Tyler McQuade
DOI:10.1021/jo050202j
日期:2005.5.1
On the basis of reaction rate data, we have proposed a new mechanism for the Baylis−Hillman reaction involving the formation of a hemiacetal intermediate. We have determined that the rate-determining step is second order in aldehyde and first order in DABCO and acrylate. We have shown that this mechanism is general to aryl aldehydes under polar, nonpolar, and protic conditions using both rate data
根据反应速率数据,我们为涉及半缩醛中间体形成的Baylis-Hillman反应提出了一种新的机理。我们已经确定,速率确定步骤在醛中是二阶,在DABCO和丙烯酸酯中是一阶。我们已经使用速率数据和两个同位素效应实验表明,这种机理是极性,非极性和质子条件下芳基醛的通用机理。