3. Write the name or draw the structure for the following. [15] Name N-methyl-2-methylpropanamine (2S,3Z,5R)-5-iodo-3-methyl-2-hex-3-enol H₂N..... שד Structure OH NH2 ■OH

What is the molecular formula for 3,4-dichloro-2-isopropylbenzoic acid? O C6H12Cl₂02 none of these O C11H10Cl2O2 O C6H10Cl2 O C10H10Cl₂O2

28. What is the systematic (IUPAC) name for the compound shown below? OH (A) 2-ethyl-1,3-dimethyl-1-hexanol (B) 3-ethyl-4-methyl-2-heptanol (C) 3-ethyl-2-hydroxy-4-methylheptane (D) 3-hydroxyethyl-4-methylheptane

Citronellol ((3R)-3,7-dimethyloct-6-en-1-ol, C10H20O) is an organic fragrance found in the oil extracted from lemon grass. a) Name the two functional groups present in the molecule.  b) When a few drops of bromine dissolved in hexane is added to a sample of citronellol the brown colour of the bromine rapidly disappears. i. What type of chemical reaction has occurred? ii. Draw the structure of the product formed. iii. Name the product.  c) The product formed when citronellol is heated with a mixture of potassium dichromate and sulfuric acid gives a yellow/orange precipitate when shaken with Brady’s reagent (2,4-dinitrophenylhydrazine). It also shows a positive result with Fehling’s solution. i. What type of chemical reaction has occurred ? ii. What type of functional group is present in the product?  d) Explain the type of stereoisomerism which may occur in citronellol.