1.2 Cyclic Systems
Table 2 (continued)
Xanthene b
Analogously:
Thioxanthene etc.
Phenoxathiine
Analogously:
Phenoxaselenine etc.
Phenoxaphosphine etc.
Pyrrole
2H-Pyrrole
Imidazole
4H-Imidazole
Pyrazole
4H-Pyrazole
5H-Indazole
Indazole
Purine b
Pyridine
(4- Pyridyl)
8
H2
1
OC 19~
~ o~
5
10
4
OC
'I s~
~ o~
6
5
4
H
N
o
1
(N)
Y
45