Compound A undergoes a reaction with hydrogen bromide, HBr to produce 2-bromobutane. A exists as cis-trans isomers and decolourises bromine solution in methylene chloride, CH2Cl2. a)Draw and name the structure of compound D. b)Draw two (2) constitutional isomers of compound D
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Compound A undergoes a reaction with hydrogen bromide, HBr to produce
2-bromobutane. A exists as cis-trans isomers and decolourises bromine
solution in methylene chloride, CH2Cl2.
a)Draw and name the structure of compound D.
b)Draw two (2) constitutional isomers of compound D
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- Draw the structures of the following acids:(a) 2-Ethyl-3-hydroxyhexanoic acid (b) m-Nitrobenzoic acidDraw a structure for the compound, C3H5Br, that fits the following 1H NMR data: δ 2.32 (3H, singlet) δ 5.35 (1H, broad singlet) δ 5.54 (1H, broad singlet)Draw a Lewis structure for hydroxylamine, NH2OH.
- CONH, HQ NH (CH)3C a.) Put asterisk on chiral centers b.) label each chiral center as R or S. c.) Draw the enantiomer d.) Draw one diastereomerDrawn are four isomeric dimethylcyclopropanes. How are the compounds in each pair related (enantiomers, diastereomers, constitutional isomers): A and B; A and C; B and C; C and D?Provide compounds that fit the following descriptions:(a) Two amines that are gases at room temperature(b) A heterocyclic amine(c) A compound with an amine group on an aromatic ring
- What prefixes are used in naming the following?(a) A 1,3-disubstituted benzene(b) A 1,4-disubstituted benzeneIdentify the acid on the left and its conjugate base on the right in the following equations:(a) HOCl + H2O ↔ H3O+ + OCl-(b) HONH2 + H2O ↔ HONH3+ + OH-(c) NH4+ + H2O ↔ NH3 + H3O+(d) 2HCO3-2 ↔ H2CO3 + CO3-2 (e) PO4-3 + H2PO4- ↔ 2HPO4-2The explosive trinitrotoluene (TNT) is made by carrying out three successive nitration reactions on toluene. If these nitrations only occur in the ortho and para positions relative to the methyl group, what is the structure of TNT?
- Compound P was discovered by a scientist. Compound P is a dipeptide, optically active and has the molecular formula C„H14N2O3. Compound P is formed when compound Q and compound R joined together by condensation reaction. While, monomers S and T are formed by modifying the compounds Q and R. Polymer U is formed by the condensation reaction of monomers S and T. Draw the possible structural formulae of compounds P, Q, R, S, T and U. Label the peptide bond(s) for compound P. Draw the possible structural formulae for repeating unit of polymer U. Please state the number of functional groups present in compound P.b) Determine which ionization state corresponds to aspartic acid (shown below) at pH 1, 7, and 10 by selecting the most suitable answer from the statements i-iv. The pK of the amine, carboxylic acid, and side chain of aspartic acid are 9.6, 1.88 and 3.65, respectively. ОН ÓH ÑH2 i) the amine is charged; the carboxylic acids are neutral. ii) the amine and carboxylic acids are all charged. iii) the amine is neutral, and the carboxylic acids are charged. iv) the amine and the carboxylic acids are all neutral. pH Statement (i, ii, iii, or iv) 1 7 10 %3DHistidine has three ionizable groups. On the titration curve below, show: a) 2 molar equivalents of OH b) pka of the third ionizable group Histidine Titration 12.0 10.0 8.0 4 pH 6.0 4.0 2.0 0.0 Equivalents OH