glycoluril dimer 、
8b,8c-dihydro-8b,8c-dimethyl-1H,3H,4H,5H,7H,8H-2,6-dioxa-3a,4a,7a,8a-tetraazacyclopenta[def]fluorene-4,8-dione 在
甲烷磺酸 作用下,
反应 3.0h,
以36%的产率得到Octahydro-1H,3H,4H,5H,6H,7H,8H,9H,10H,11H,13H,14H,15H,16H,17H,18H,19H,20H-2,12-dioxa-3a,4a,5a,6a,7a,8a,9a,10a,13a,14a,15a,16a,17a,18a,19a,20a-hexadecaazabisbenzo[3',4']pentaleno[1',6':5,6,7]cycloocta[1,2,3-gh:1',2',3'-g'h']cycloocta[1,2,3-cd:5,6,7-c'd']dipentalene-4,6,8,10,14,16,18,20-octone