Which sample(s) gave a positive result for the 2,4-DNP test? tert-butanol formaldehyde cyclohexanone acetone
7. When isopentyl ethanoate reacts with DIBAH it produces an aldehyde; however, if the same ester reacts with LAH, it produces ethanol. Why is this? Please draw reactions/intermediates/steps to explain. (5) 7. When isopentyl ethanoate reacts with DIBAH it produces an aldehyde; however, if the same ester reacts with LAH, it produces ethanol. Why is this? Please draw reactions/intermediates/steps to explain. (5) 9. 2,4-DNP is known to form imines on reaction with any aldehyde or ketone giving a characteristic yellow...
3. What is a positive test for the 2,4-DNP test with an aliphatic ketone? (2 points) 4. Draw the final product you obtain by reacting acetone with 2,4-DNP. (2 points)
14. The molecule 2,4-dinitrophenol (DNP) is an uncoupling agent that breaks down the concentration gradient of protons formed during oxidative phosphorylation. DNP shuttling protons across the cell membrane, equalizing the concentration of protons on either side of the membrane. Which of the following will be true for a bacterium poisoned with DNP? a. The cell will have an increased level of NADH in the cytoplasm b. Oxygen will not be converted to water by the electron transport chain c. Glycolysis...
14. The molecule 2,4-dinitrophenol (DNP) is an uncoupling agent that breaks down the concentration gradient of protons formed during oxidative phosphorylation. DNP shuttling protons across the cell membrane, equalizing the concentration of protons on either side of the membrane. Which of the following will be true for a bacterium poisoned with DNP? a. The cell will have an increased level of NADH in the cytoplasm b. Oxygen will not be converted to water by the electron transport chain c. Glycolysis...
Regarding the qualitative analysis experiment which of the following statements is false? Ellagic acid decolorizes Br_2/CH_2Cl_2 and forms a colorful complex with aqueous FeCl_3. Pulegone reacts positively with 2,4-DNP and Br_2/CH_2Cl_2 reagents. Isoamyl alcohol gives positive NaI/acetone and negative AgNO_3/EtOH tests. Tyrosol reacts positively with Br_2/CH_2Cl_2, and Jones reagents. Umbelliferone gives a positive test with B Br_2/CH_2Cl_2 and negative with 2,4-DNP. Furfural gives positive 2,4-DNP, and Tollen's tests. Which one of the following reagents is not corrosive?
2,4-dinitrophenol (DNP) and carbonylcyanide-p-trifluoromethoxyphenylhydrazone (FCCP) are well known uncouplers that can dissipate the proton gradient across the inner mitochondrial membrane created by the electron-transport system. Explain how this uncoupling works, in terms of the chemical properties of DNP and FCCP.
b. Draw the product when a ketone is treated with 2,4-DNP in the presence of catalytic acid O2N NO2 H2NHN HO* (cat.) R c. Draw a complete mechanism for this reaction. Include curved arrows, all reactive intermediates, and elementary step labels above each step
#106 1. 2,4-DNP Test 2. Silver Mirror tert 3. Chromic acio / Shiff's Reagent 4. Iodo form test
Propose a structure and state information provided by the clues: C8H14O, achiral, 2,4-DNP test gave a red precipitate. KMnO4 gave no change. Treatment with D2O/NaOD gave C8H11D3O. The carbon NMR shows 7 lines. The DEPT135 has only five lines with just one of these inverted.