Hinge Pins For Tailgate

written exam of 20 Nov. '06

a . Write the structures of these molecules to
) 2-chloro-3 ,4-diidrossipentanale b) acid 3-amino-2-fluoro-4-nitrobenzoate; c) 2,2,3,3-tetrametilciclobutanone d) ( 2E) -4.5-dimethyl-2-hexene; e) acid (2S, 3R)-2-amino-3-methylpentane; f) How many stereoisomers of the molecule and there)?

2. Identify the functional groups present in vitamin C, whose structure is as follows

3. Write entries for the second acidity increasing the molecules listed below: a) 2-nitrophenol b) phenol, c) 2-methyl-ciclopropanolo d) acid 3-fluorobutanoico e) cloropropanoico acid 2-f) methyl-cyclobutane;

4 . Give an explanation of the fact that cyclohexene reacts rapidly with bromine, while benzene is inert.

5. Write the structure of a) a D-amino acid, b) an L-chetoesoso c) a triglyceride; d) a nucleoside; e) an ester.

Script ORGANIC CHEMISTRY
Degree Viticulture and Enology January 19, 2006

a . Naming the structures shown.

2. Sort monosaccharides whose structures are given below.

3. Identify and give a few examples of what are the conditions under which a chemical species to be defined as aromatic.

4. How could a separate, 3.5-cyclohexane Tribromo from cyclohexylamine?

5. Write the structures of the following substances: a) a D-amino acid, b) An L-aldopentoso c) The triglyceride formed by acid butyric acid. (6)


degree in Agricultural Science and Technology
Written Examination Organic Chemistry (21 July '05)

1. Write the structures of these molecules
a) 2,3-dihydroxy-4-metilesanale b) (2S) 2-Amino-3-methylpentane; c) dimetilciclobutanolo 1,2-d) (2E, 4Z) -2,4-hexadiene; e) acid, 2,4-dimethyl-3-nitrobenzoate.

2. Draw all possible stereoisomer of 2,3-dihydroxy-butandioco.

3. Write entries for the second increasing acidity of the molecules listed below: a) 2-nitrophenol b) 4-methylphenol; c) 2-methyl-cyclohexanol; d) acid 2-fluoropropanoico e) iodoesanoico acid 3-f) 1, 1.2-trimetilciclopropano.

4. Explain why the hydrocarbon 1,3-cyclopentadiene acts as an acid (pKa ≈ 15) while the cyclopentene no (pKa ≈ 40).

5. Write the structure of a) an L-amino acid, b) a D-chetopentoso c) a monoglyceride d) a nucleotide e) an acetal.


second test exemption ORGANIC CHEMISTRY
Degree Viticulture December 18, 2006 and Enology

6. Naming the structures shown, explaining the observed acidity scale.

7. Sort monosaccharides whose structures are given below.

8. Indicate which between chemical species proposed below can be defined as aromatic.

9. Describe a method to separate the 3.5-by 1.3-dietilanilina dietilbenzene.

10. Write the structures of the following substances: a) a dipeptide composed only by D-amino acids b) The anomeric a D-closed form aldotreoso furanosica c) The diglyceride formed by acid butyric acid.

Degree Viticulture and Enology
WRITTEN EXAMINATION ORGANIC CHEMISTRY February 19, 2007

11. Naming molecules below, specifying for each possible number of stereoisomers.

12. Please indicate which features should have an aromatic organic molecule to be defined.

13. Illustrate a method for separating acid from 3-METHYLBENZOQUATE chlorobenzene.

14. Write the generic structures of the following substances: a) a D-aldochetoso b) a b-amino acid, c) the triglyceride formed by acid butyric d) a cyclic hemiacetal, e) a nucleoside present in DNA; f) monounsaturated fatty acid.

15. Write entries for the second growing basicity structures of the molecules shown below. a) Ethylamine b) diisopropylamine; c) Ammonia; d) Aniline e) 4-nitroaniline; f) 1,3,5-trimethylbenzene.