Cyclopropanation of alkenes using hypervalent iodine reagents
نویسندگان
چکیده
منابع مشابه
Thioamination of Alkenes with Hypervalent Iodine Reagents
An efficient thioamination of alkenes mediated by iodine(III) reagents is described. The use of different sulfur nucleophiles allows the flexible synthesis of 1,2-aminothiols from alkenes. By employing chiral iodine(III) reagents, a stereoselective version of the thioamination protocol has also been developed.
متن کاملFacile Oxidative Rearrangements Using Hypervalent Iodine Reagents
Aromatic substituents migrate in a novel oxidative cyclization mediated by iodine(III) reagents. 4-Arylbut-3-enoic acids are cyclized and rearranged to 4-arylfuran-2(5H)-ones by hypervalent iodine compounds in good to excellent yields under mild reaction conditions. Other ring sizes are also accessible. The mechanism of the reaction is described in detail, and calculations highlight the cationi...
متن کاملDiastereoselective aminooxygenation and diamination of alkenes with amidines by hypervalent iodine(III) reagents.
Diastereoselective anti-aminooxygenation and anti-diamination of alkenes with amidines were enabled by hypervalent iodine(III) reagents such as PhI(OCOR)2 and PhI(NMs2)2, respectively. The present transformation offers diastereochemically pure dihydroimidazoles divergently from E- and Z-alkenes.
متن کاملAsymmetric Synthesis with Hypervalent Iodine Reagents.
This chapter describes recent developments in stereoselective synthesis using hypervalent iodine reagents.
متن کاملTotal synthesis of natural products using hypervalent iodine reagents
We present a review of natural product syntheses accomplished in our laboratory during the last 5 years. Each synthetic route features a phenol dearomatization promoted by an environmentally benign hypervalent iodine reagent. The dearomatizations demonstrate the "aromatic ring umpolung" concept, and involve stereoselective remodeling of the inert unsaturations of a phenol into a highly function...
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2003
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0004.618