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- Melamine, used as a fire retardant and a component of the writing surface of white boards, can be prepared from s-trichlorotriazine through a series of SNAr reactions with ammonia. The first substitution takes place rapidly at room temperature. The second substitution takes place near 100 °C, and the third substitution requires even higher temperature and pressure. Provide an explanation fatr this reactivity.Fill in the missing reagents a-h in the following scheme:2. How many substitution product/s is/are formed when metabromo anisole is treated with ammonia?A. 0-no reactionB. 1C. 2D. 3
- Which substituent is the strongest deactivator to EAS reactions? -NO2 -Cl -CH3 -OHM 6 write the principal product in a, c & e and the neccesary reactives for b, d & f in the following reactions :1a) What’s the product in the following reaction? a. 4 b. 1 c. 2 d. 5 e. 3 1b) What reagents would you use to prepare product A with good yield? a. CH3CH2CH2CH2I; 2) Li, NH3 (liq), -33 °C b. KNH2; 2) CH3I; 3) H2, Pd/C c. HBr; 2) (CH3CH2CH2CH2)2CuLi d. NaNH2; 2) CH3CH2CH2CH2Br; 3) H2, Lindlar catalyst e. (CH3CH2CH2CH2)2CuLi; 2) H2, Lindlar catalyst
- Choose the best reagents from the list provided below for carrying out the following conversion. Match the reagent with the step number. HCl (aq), Zn(Hg) Br2, FeBr3 Na/NH3, -33 degrees C NBS, light KMnO4, H3O+ Mg metal, ether KOH, EtOH, heat(2)Draw the product(s) for each reaction. Provide stereochemistry where appropriate. Indicate if the reactionproceeds via S N 1 or S N 2Draw the products formed when CH3CH2C=C Na+ reacts with each compound. a. CH3CH2CH2Br b.(CH3)2CHCH2CH2Cl c.(CH3CH2)3CCl d.BrCH2CH2CH2CH2OH e. ethylene oxide followed by H2O f.propene oxide followed by H2O