Titanium-Catalyzed Cyclopropanation of Boc-Protected Cyanohydrins: A Short Access to Aminocyclopropanecarboxylic Acid Derivatives

Morwenna S. M. Pearson-Long, Alice Beauseigneur, Philippe Karoyan, Jan Szymoniak & Philippe Bertus
The preparation of protected 1-aminocyclopropanecarboxylic acid was performed from readily available and inexpensive starting materials, using titanium-catalyzed cyclopropanation as the key step. As an extension of this methodology, a diastereoselective synthesis of the cis-2-vinyl-substituted analogue is presented.