44
1 Parent Structures
Table 2. The most important heterocycles for which trivial names are retained a
Thiophene
(2-Thienyl)
Analogously:
Selenophene
Tellurophene
Furan
(3-Furyl)
2H-Pyran
4H-Pyran
Analogously:
Thiopyran etc.
Benzofuran
Now:
1-Benzofuran
Isobenzofuran
Now:
2-Benzofuran
2H-Chromene
(2H-Chromen-3-yl)
Analogously:
Thiochromene
4aH-Isochromene
(4aH-Isochromen-3-yl)
Analogously:
Isothiochromene etc.
Thianthrene
Analogously:
Oxanthrene etc.
Phosphanthrene etc.
Boranthrene etc.
Silanthrene etc.
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