1.4 Consider the structure below: OH НО. po OH e) What is the biological name of Rooibos tea? f) Name at least 4 of biological activities of this plant.
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- 2. Match. A) aldehyde B) ketone C) carboxylic acid D) amine E) ester CH3-N-H CH3-CH2-O–CH3 CH;-CH=CH-CH3 ČH2CH3 CH,CH;CH,CH3 CH3(CH2)4CH3 F) alcohol G) alkane H) alkene I) alkyne J) aromatic K) ether CH;CH,CC=CH CH;CH-CH2COH CH2CH,CH3 ČH3 CH3CH2CH Br CH3 CH3-CH2-CHCH,CH3 CH-C -0-CH,CH ОН Br CH31.2 The following is a drug used to treat multi-drug resistant strains of Falciparum malaria CH3 H3C a) b) b) c) 0-0 O O H "H CH3 What is the name of the drug and what group of compounds does it belong to? What is it often used for? Which South African plant is the drug isolated from? Indicate whether this compound is a primary or secondary metabolite and explain your answer?(a) (1) Mg, Ether (ii) CO2 (iii) H* / H2O Br (b) CHO (1) Br2 Acetic acid (2) NaOEt, ETOH, A OH (c) 10% KOH CH3 water, boill N'
- 1.4 Consider the structure below: OH HO "pro OH a) What is its name of the compound and what plant is it isolated from? b) What class of compounds does it belong to?Intermolecular Forces and Solubility: (Like dissolve like) 1. Which of the following molecules are polar? Label them. 2. Which of the following molecules are nonpolar. Label them. 3. Which of the following compounds are ionic? Label them. 4. Which of the compounds below would dissolve best in cyclohexane and which ones will dissolve best in water? Put a W or C next to each indicated structure to indicate their solubility. Do not put W or C next to cyclohexane or water because they are solvents to dissolve other molecules H2 H2C° CH2 H. H2C. .CH2 water H2 cyclohexane K* i. H2 H2 H3C. K* CH3 H2 H2 H3C CH3 potassium sulfate hexane acetone K,SO4B(OR) 2 ساره Pd(PPH3)4 5 mol%, NaOEt, benzene
- 2) Complete the reaction: NO. LOH FECLT1) NaOH, H20 2) CH3CH2CH,Br 3) NaOH, H20 4) CH3I 5) NaOH, H2O, Нeat 6) Hо* 7) НeatAlkaloids are basic nitrogen-containing compounds of plant origin, many of which are physiologically active when administered to humans. Ingestion of coniine, isolated from water hemlock, can cause weakness, labored respiration, paralysis, and eventually death. Coniine is the toxic substance in the “poison hemlock” used in the death of Socrates. In small doses, nicotine is an addictive stimulant. In larger doses, it causes depression, nausea, and vomiting. In still larger doses, it is a deadly poison. Solutions of nicotine in water are used as insecticides. Cocaine is a central nervous system stimulant obtained from the leaves of the coca plant.Classify each amino group in these alkaloids according to type (primary, secondary, tertiary, aliphatic, aromatic, heterocyclic).
- Rectified spirit is:(a) 50% ethanol(b) 80% ethanol(c) 95% ethanol(d) 40 to 50% ethanol1) Compound 3-chlorobenzoic acid can be prepared from methylbenzene through a two- steps reaction. chemical equations for the reactions ? 2) 2 C12 (g) + 2 H20 (g) = 4 HCI (g) + 02 (g) Ac 2 HCI (g) + 1/2 02 (g) = C12 (g) + H20 (g) Ac' relationship between Ac and Ac' ? 3) Hydrogen iodide, HI decomposes 2HI (g) = H2 (g) + 12 (g) AH < 0 -2.00 atm of HI placed in a glass - allowed to reach equilibrium a) Ap for the reaction if 30.0% of HI decomposes ? b) the concentration of HI(g) will increase, decrease or remain the same when the temperature of reaction is increased ?CH3 + KMNO4 CH3 CH2 85% H¿PO4 CH3 CH3 Q2. In the Preparation of Alkenes from alcohols the acid (HA) is used as dehydrating agent shoul their ion (A) be (At the same time): 1. 2.