Synthesis and Properties of 2-Oxa-6-azaspiro[3.3]heptane Sulfonate Salts
作者:Richard van der Haas、Jeroen Dekker、Jorma Hassfeld、Anastasia Hager、Peter Fey、Philipp Rubenbauer、Eric Damen
DOI:10.1055/s-0036-1588733
日期:2017.6
2-oxa-6-azaspiro[3.3]heptane is presented. While this compound is often isolated as an oxalate salt, its isolation as a sulfonic acid salt yields a more stable and more soluble product. With these improved properties access to a wider range of reaction conditions with the spirobicyclic 2-oxa-6-azaspiro[3.3]heptane has been enabled. An improved synthesis of the bicyclic spiro compound 2-oxa-6-azaspiro[3.3]heptane is