1: 9,12-dioxa-1,3-diaza-dispiro[4.2.4.2]tetradecane-2,4-dione With barium dihydroxide in water T=150°C; 6 h; in an autoclave; 2: (NH4)2CO3 in water T=60°C; 1 h;
参考文献
ZENTARIS AG
Patent: US2003/232873 A1, 2003 ;
Location in patent: Page 13 ;
US 20030232873 A1