Oxazoline-Based Organocatalyst for Enantioselective Strecker Reactions: A Protocol for the Synthesis of Levamisole
作者:Arghya Sadhukhan、Debashis Sahu、Bishwajit Ganguly、Noor-ul H. Khan、Rukhsana I. Kureshy、Sayed H. R. Abdi、E. Suresh、Hari C. Bajaj
DOI:10.1002/chem.201302007
日期:2013.10.11
catalyze asymmetric Streckerreactions of various aromatic and aliphatic N‐benzhydrylimines with trimethylsilylcyanide (TMSCN) as a cyanide source at −20 °C to give α‐aminonitriles in high yield (96 %) with excellent chiral induction (up to 98 % ee). DFT calculations have been performed to rationalize the enantioselective formation of the product with the organocatalyst in these reactions. The organocatalyst