Synfacts, Table of Contents Synfacts 2021; 17(11): 1206DOI: 10.1055/s-0040-1720696 Synthesis of Heterocycles Gram-Scale Access to Orthogonally Protected (Aza)spiro[2.3]Hexane Diamines Authors (Pfizer) Contributor(s): John Trujillo Paul Richardson Recommend Article Abstract Buy Article(opens in new window)Key words Key wordsspirocycles - azetidines - cyclopropanes - Corey–Chaikovsky reaction - diamine - orthogonal protection Full Text