Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 3, Issue 8-9, Pages 1472-1478Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.200800134
Keywords
alkylation; Grignard reaction; homogeneous catalysis; styrene; titanium
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Regioselective double alkylation of styrenes with alkyl Grignard reagents and alkyl bromides having a heteroatom functional group at the P-position has been achieved by the use of a titanocene catalyst in THE When ether was used instead of THF as a solvent, monoalkylation by substitution of a vinylic hydrogen atom with an alkyl group proceeded under similar conditions. These reactions involve the addition of alkyl radicals to styrenes to form benzylic radical intermediates.
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