Environmental Chemistry Assignment | Professional Essay Writers
1. In the CH-CH-NH2 1 2 3
(a) atom 3 to atom 1.
(b) atom I to atom 3.
(c) from right to left (d) a & b (e) a &c.
2. Which of the follo Which of the following is not conjugated system?
a. 2.1.3-cyclopentadiene.
(b) 1,4,7-octatriene.
(c) CH2=CH-CH CH2.
3. Diels Alder reaction is:
(a) A cyclo addition reaction involving 4 Pi electrons.
(b) An electrocyclic reaction involving 6 Pi electrons.
(c) A 4 + 4x electrocyclic reaction (d) n/a.
4. which of these compounds is a good dienophile.
(a) CH2 CH-OCH;
(b) CH2=CHNO2.
(c) CH2-CH2.
Mark (a) true (b) false (c) n/a for each of these statements.
5. A stereo-specific reaction is also regio-specific.
6. A stereo-selective reaction is also stereo-specific.
7. A stereo-specific reaction is also stereo-selective.
8. Cycloaddition reaction is always electrocyclic reaction.
9. Electrocyclic reaction is always cycloaddition reaction.
10. Stereospecific reaction is always stereoselective reaction.
11. Diels-Alder reaction is stereospecific and regioselective.
12. Diels-Alder reaction gives more endo product and less exo product.
13. Diels-Alder reaction is thermally forbidden.
14. Butadiene cyclizes photochemically. Get Chemistry help Today
