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À propos de : Substituted Diarylmethylamines by Stereospecific Intramolecular ElectrophilicArylation of Lithiated Ureas        

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  • Substituted Diarylmethylamines by Stereospecific Intramolecular ElectrophilicArylation of Lithiated Ureas
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  • On lithiation, N-benzyl ureas varying N‘-aryl substituents undergo a migration of the aryl ring to the α carbon of the N-benzyl group. With chiral, enantiomerically pure N-α-methylbenzyl ureas, the rearrangement is stereospecific and creates a new, fully substituted stereogenic center α to N. Removal of the urea function by N-nitrosation and hydrolysis allows the synthesis of chiral tertiary carbinamines in high enantiomeric purity.
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