Substituent-directed oxidation: Regiochemistry and stereochemistry of the 4addition of hypervalent iodine reagents to cycloalkenols.
作者:Ho-jin Kim、Matthew F. Schlecht
DOI:10.1016/s0040-4039(00)96694-2
日期:1987.1
The transannular oxidative cyclization of 1-methylcyclooct-4-en-1-ol and cyclooct-4-en-1-ol was studied using hypervalent iodine reagents. The regioselectivity for the [3.3.1] vs. [4.2.1] 9-oxabicyclononane skeletons is low, but the addition is highly -selective; the results are rationalized in terms of a tricyclic oxonium ion intermediate.
使用高价碘试剂研究了1-甲基环辛-4-烯-1-醇和环辛-4-烯-1-醇的跨环氧化环化作用。[3.3.1]对[4.2.1] 9-氧杂双环壬烷骨架的区域选择性低,但是添加的选择性高。根据三环氧鎓离子中间体对结果进行了合理化。