Access to “Friedel–Crafts-Restricted”tert-Alkyl Aromatics by Activation/Methylation of Tertiary Benzylic Alcohols
نویسندگان
چکیده
منابع مشابه
Easy access to benzylic esters directly from alkyl benzenes under metal-free conditions.
An efficient metal free protocol has been developed for the synthesis of benzylic esters via a cross dehydrogenative coupling (CDC) involving alkylbenzene(s) as a self- or as a cross-coupling partner(s) via the intermediacy of Ar-COOH and the benzylic carbocation obtained from the other half of the alkylbenzene; both symmetrical as well as unsymmetrical esters can be prepared using Bu4NI and TBHP.
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Benzylic acetates reacted with arylboronic acids in the presence of a DPEphos-[Pd(eta3-C3H5)Cl]2 catalyst when tert-amyl alcohol was used as a solvent, and the catalytic cross-couplings produced diarylmethanes in high yields (up to 94% isolated yield).
متن کاملOxidation of benzylic alcohols with molecular oxygen catalyzed by Cu3/2[PMo12O40]/SiO2
The aerobic oxidation of alcohols was efficiently completed in high conversion and selectivity using Cu3/2[PMo12O40]/SiO2 as catalyst under mild reaction condition. This reaction provides a new environmentally friendly rout to the conversion of alcoholic function to carbonyl groups.
متن کاملOxidation of benzylic alcohols with molecular oxygen catalyzed by Cu3/2[PMo12O40]/SiO2
The aerobic oxidation of alcohols was efficiently completed in high conversion and selectivity using Cu3/2[PMo12O40]/SiO2 as catalyst under mild reaction condition. This reaction provides a new environmentally friendly rout to the conversion of alcoholic function to carbonyl groups.
متن کاملDecarboxylative substitution of β-keto acids to benzylic alcohols catalyzed by molecular iodine.
An efficient method for molecular iodine catalyzed decarboxylative substitution of β-keto acids with benzylic alcohols under mild conditions has been described and valuable α-functionalized ketones were obtained in good to excellent yields.
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ژورنال
عنوان ژورنال: The Journal of Organic Chemistry
سال: 2012
ISSN: 0022-3263,1520-6904
DOI: 10.1021/jo202371c