Iodide reagent controlled reaction pathway of iodoperoxidation of alkenes: a high regioselectivity synthesis of α- and β-iodoperoxidates under solvent-free conditions
作者:Xiaofang Gao、Hongling Yang、Chen Cheng、Qi Jia、Fang Gao、Hongxiang Chen、Qun Cai、Chuangjian Wang
DOI:10.1039/c8gc00209f
日期:——
afforded a convenient path to obtain two different configurations of iodoperoxidates from the same starting materials. Notably, the regiodivergent iodoperoxidation reaction was achieved by using different iodide reagents. A series of control experiments were performed, which suggested the involvement of a radical pathway for the anti-Markovnikov type iodoperoxidates (α) in the combination of ammonium
Diverse Pathways for the Palladium(II)-Mediated Oxidation of Olefins by <i>tert</i>-Butylhydroperoxide
作者:Jin-Quan Yu、E. J. Corey
DOI:10.1021/ol0262340
日期:2002.8.1
[reaction: see text] New procedures are described for the palladium-catalyzed oxidation of olefins by tert-butylhydroperoxide under slightly basic conditions in CH(2)Cl(2) solution at 0-25 degrees C.
By judicious choice of the counter anions in the vanadyl catalysts, we can achieve β-hydroxylated and t-butyl peroxylated carbonylation of styrenes by aromatic 1° and 2° alkyl aldehydes in a complementary manner.
Manganese triacetate as an efficient catalyst for bisperoxidation of styrenes
作者:Alexander O. Terent'ev、Mikhail Yu. Sharipov、Igor B. Krylov、Darya V. Gaidarenko、Gennady I. Nikishin
DOI:10.1039/c4ob01823k
日期:——
A method was developed for the bisperoxidation of styrenes with tert-butyl hydroperoxide in the presence of a catalytic amount of manganese(III) acetate. It was shown that compounds of manganese in oxidation states 2, 4, and 7 also catalyze this reaction. The target [1,2-bis(tert-butylperoxy)ethyl]arenes were synthesized in yields from 46 to 75%.
H-montmorillonite and 6-(ethoxydimethylsilyl)-2, 2′-bipyridine. Treatment of the bpy-mont with [RuCl2(CO)2]n affords a novel clay catalyst including Ru(II)-bpy. The oxidation of aromatic alkenes with tert-BuOOH in the presence of the catalyst and Et3N mainly produces vic-bis(tert-butyldioxy)alkanes. A similar oxidation of 2, 3-dimethyl-1, 3-butadiene affords 1, 4- and 1, 2-bis(tert-butyldioxy)alkenes