Directed Dihydroxylation of Cyclic Allylic Alcohols and Trichloroacetamides Using OsO<sub>4</sub>/TMEDA
作者:Timothy J. Donohoe、Kevin Blades、Peter R. Moore、Michael J. Waring、Jon J. G. Winter、Madeleine Helliwell、Nicholas J. Newcombe、Geoffrey Stemp
DOI:10.1021/jo026161y
日期:2002.11.1
The oxidation of a range of cyclicallylicalcohols and amides with OsO4/TMEDA is presented. Under these conditions, hydrogen bonding control leads to the (contrasteric) formation of the syn isomer in almost every example that was examined. Evidence for the bidentate binding of TMEDA to OsO4 is presented and a plausible mechanism described.
on human skin for repellency against female Aedes aegypti mosquitoes. Compounds exhibiting the longest durations of repellency were those with boiling points of approximately 125°/0.5 mm. The case of two monobenzyl ethers of 3,4-dihydroxycyclopentene-1 having the same boiling points but different repellent activity is of interest. None of the compounds examined was as effective as N,N-diethyl-m-toluamide