Method for preparing the bispicrate salt of 2,3,7,8-tetraazaspiro 4. 4!nonane

摘要

Synthetic routes to 2,3,7,8-tetraazaspiro 4.4!nonane, its bispicrate salt, 2,3,7,8-tetraazaspiro 4.4!nona-2,7-diene, and 3,8- dicarbomethoxy-2, 3,7,8-tetraazaspiro 4.4!nona-1,6-diene. The compounds are useful as high density fuels.