Rearrangement of 2-(4-Hydroxyalkyl)-1,3-dioxolanes to 2-Hydroxyethyl Alkanoic Esters by 1,5-Hydride Shift – An Unprecedented Intramolecular Redox Reaction
作者:Karsten Krohn、Ulrich Flörke、Uwe Höfker、Marion Träubel
DOI:10.1002/(sici)1099-0690(199912)1999:12<3495::aid-ejoc3495>3.0.co;2-0
日期:1999.12
2-(4-Hydroxyalkyl)-1,3-dioxolanes (3a/3b, 5–7) undergo an acid-catalyzed rearrangement to give 2-hydroxyethyl alkanoic esters 8–11. The postulated mechanism, proceeding via the benzylic carbenium ion B and the 1,3-dioxolan-2-ylium cation C, is supported by the stereochemistry of the reaction and the results of deuterium labeling experiments.
2-(4-羟基烷基)-1,3-二氧戊环 (3a/3b, 5-7) 经过酸催化重排得到 2-羟乙基链烷酸酯 8-11。通过苄基碳鎓离子 B 和 1,3-dioxolan-2-ylium 阳离子 C 进行的假设机制得到反应的立体化学和氘标记实验结果的支持。