LiTw 發問於 科學及數學化學 · 9 年前

28 organic compound naming Qs

Name the following organic compounds according to the IUPAC system.




My answers

1) but-2-ene

2) ethanol

3) propanone

4) 2-methylpropan-2-ol

5) 2-amino-2-chloropropane

6) 2-bromo-1-chloro-2-fluoropropan-1-ol

7) phenol

8) cyclohexanol

9) diethyl ether

10) 3-ethyl-2-methylhexane

11) 2,2-dimethylpropanoic acid

12) ethandioic acid

13) I don't know how to do this, plz teach me.

14) methyl ethanoate

15) ethanamide

16) methylethanamide

17) 4-hydroxyphenol

18) 4-hydroxyphenyl ethanamide

19) propan-1,2,3-triol

20) I don't know this, plz teach me

21) tetrafluoroethene

22) methyl 2-methylprop-2-enoate

23) methanal

24) I don't know how to do this, plz teach me.

25) ethnoyl acid

26) I don't know how to do this, plz teach me.

27) I don't know how to do this, plz teach me.

28) 2-amino-3-hydroxypropanoic acid

Are they correct?

And for those I don't know how to do, can the steps of identifying functional group and homologus series be listed, I don't know how to name them!!

Thank you very very much!

3 個解答

  • 9 年前

    1. correct

    2. correct

    3. correct

    4. correct

    5. "amine" is the suffix here.

    so, it's 2-chloropropan-2-amine

    6. correct

    7. correct

    ("phenol" is so commonly used that everyone knows what it is)

    8. correct

    9. "diethyl ether" is a common name.

    its main chain is "ethane", with a substituent of "ethoxy".

    so, it's "ethoxyethane"

    10. correct

    11. in principle, the naming is correct.

    however, I'd rather name it as "dimethylpropanoic acid",

    as on the world there could be ONLY ONE dimethylpropanoic acid, no ambiguity.

    12. "ethanedioic acid".

    after "ethan-", the "d" but not a vowel; so after "ethan-" we need an extra "e".

    13. this is acid anhydride.

    if the parent acids for both sides are the same (like this), then name according to the acid ------> "ethanoic anhydride".

    (common name: "acetic anhydride")

    If the acids are different, arrange them alphabetically, like "ethanoic popanoic anhydride".

    14. correct

    15. correct

    16. in principle, it's named as "N-methylethanamide".

    The substituent on the nitrogen atom has to be named accordingly.

    However, I bet your name is also okay, as on the world there's ONLY ONE possible methylethanamide.

    17. "benzene-1,4-diol"

    Also has common name of "hydroquinone" and "para-benzenediol".

    Sometimes "1,4- position" is called "para-" or simply "p-";

    "1,3- position" ------> "meta-" or "m-"

    "1,2- position" ------> "ortho-" or "o-"

    18. your "4-hydroxyphenyl-" is a whole substituent (on the amide-nitrogen), so put it in brackets:

    "N-(4-hydroxyphenyl)ethanamide" (one word, no spacing)

    19. correct

    20. sold as "aspirin" 阿士匹靈; common name as "acetylsalicylic acid";

    Wikipedia says "2-acetoxybenzoic acid"; I guess something like "2-carboxyphenyl ethanoate".

    Well, just call it "acetylsalicylic acid", everyone knows what it is.

    21. correct

    22. I bet it could be simplified as "methyl 2-methylpropenoate" or even "methyl methylpropenoate", reason same as above.

    23. correct

    24. Someone call it "carbamide", but "urea" is good enough.

    2012-05-22 09:31:53 補充:

    25. notice the chlorine attached to the carbon in C=O, so it's "ethanoyl chloride".

    2012-05-22 09:32:09 補充:

    26. yes, it's a hydrazine; and there's ONE big substituent, consists of a phenyl ring with two nitro- group.


    2012-05-22 09:32:24 補充:

    con't 26.

    It's also a well-known reagent (well, at least in A-level) called "Brady's reagent", and sometimes abbreviated as "2,4-D" or "2,4-DNPH".

    2012-05-22 09:32:44 補充:

    27. This is hard as hell. Well... it's nylon 尼龍.

    "Nylon-6,6" ---- first number represents no. of carbon atoms in parent diamine (in this case, hexane-1,6-diamine"; second number represents no. of carbon in dioic acid (hexanedioic acid).

    2012-05-22 09:32:54 補充:

    Notice that "Nylon-6" is different from "Nylon-6,6".

    28. correct.

    But it's also an amino acid, everyone knows it is "serine".

    2012-05-22 21:43:01 補充:

    Oh well, did I do something stupid?

    Oh well, at least LiTw has shown his effort on trying his best attempting the questions. This could be some demonstrations for others on naming.

    Oh well, even I could not always pay attention to the class.

  • 9 年前

    Sorry, I have forgot to choose you as the best answerer!!

  • Haha, it's my hw. And I know which X you are!

    I won't tell Miss Chan ! ^_^

    2012-05-22 19:03:06 補充:

    And, I know you haven't pay attention on class(all have been taught and discussed in class) ^_^

    2012-05-23 21:10:51 補充:

    Actually, I don't mean anything, I'm just pulling his leg = =