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preface to fifteenth edition

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1.16 SECTION 1<br />

TABLE 1.6 Trivial Names of Heterocyclic Systems That Are Not Recommended for Use in Fusion Names<br />

Listed in order of increasing priority.<br />

Structure Parent name Radical name Structure Parent name Radical name<br />

Pyrazoline<br />

(3-shown*)<br />

Pyrazolinyl<br />

Isochroman<br />

Isochromanyl<br />

Piperidine<br />

Piperidyl†<br />

Chroman<br />

Chromanyl<br />

Piperazine<br />

Piperazinyl<br />

Pyrrolidine<br />

Pyrrolinyl<br />

Pyrroline<br />

(2-shown*)<br />

Pyrrolinyl<br />

Indoline<br />

Indolinyl<br />

Imidazolidine<br />

Imidazolidinyl<br />

Isoindoline<br />

Isoindolinyl<br />

Imidazoline<br />

(2-shown*)<br />

Imidazolinyl<br />

Quinuclidine<br />

Quinuclidinyl<br />

Pyrazolidine<br />

Pyrazolidinyl<br />

Morpholine<br />

Morpholinyl‡<br />

* Denotes position of double bond.<br />

† For 1-piperidyl, use piperidino.<br />

‡ For 4-morpholinyl, use morpholino.<br />

4. A component containing the largest possible individual ring<br />

5. A component containing the greatest number of heteroa<strong>to</strong>ms of any kind<br />

6. A component containing the greatest variety of heteroa<strong>to</strong>ms<br />

7. A component containing the greatest number of heteroa<strong>to</strong>ms first listed in Table 1.3

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