Enantioselective Intramolecular α‐Arylation of Benzylamine Derivatives: Synthesis of a Precursor to Levocetirizine
作者:Rakesh K. Saunthwal、Maria Schwarz、Rajendra K. Mallick、William Terry‐Wright、Jonathan Clayden
DOI:10.1002/anie.202216758
日期:2023.3.27
The deprotonation of N′-aryl urea derivatives with a chiral lithium amide base leads to an enantioselective C-arylation of benzylamines. An unusual stereoretentive substitution reaction followed by N-deprotection of the urea forms diarylmethylamine derivatives, including a synthetic intermediate en route to the drug levocetirizine.