Samples Reagent: Test for Carbonyl Group a. 2,4 DNPH b. Acetophenone c. Benzaldehyde d. Formalin a. 2,4 DNPH Organic compound Rectified spirit 2,4 DNPH reagent b. a. The 2,4 DNPH reacts with the carbonyl group and forms a yellow-orange precipitate of 2,4 e. Acetone DNPH. b.
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- From the given two compounds in the image, which reagents would differentiate the pair? a. Br2 in CH2Cl2 b. CrO3, H2SO4, acetone c. concentrated HCl with ZnCl2 d. aqueous FeCl3 e. aqueous NAHCO3 f. ammoniacal AgNo3Draw the structure corresponding to each name.a. 3,3-dimethylpentanoic acidb. 4-chloro-3-phenylheptanoic acidc. (R)-2-chloropropanoic acidd. m-hydroxybenzoic acide. potassium acetatef. sodium a-bromobutyrateg. 2, 2-dichloropentanedioic acidh. 4-isopropyl-2-methyloctanedioic acid3. Reactions H3C. H3C. NH ΝΗ #₂0 #₂0 4. Which compound is more water soluble? Why? CH3–NH2 CH3-NH3+
- 3. Prepare the following from cylcopentanol. -CN H 4. 5. OH 1. TsCl, pyr 1. NaOCH3/CH3OH 2. H₂O 2. CH3CH2O5 6 Is the compound E or Z? Attachments A. E B. Z Is this molecule E or Z. I Attachments 3-bromo-2-carboxaldehydo-3-fluorobut-2-enoic acid H₂N H₂N A. Z B. E HC HCH₂C C ECH₂C OH Br CH₂CH CH₂CH₂OHDraw the products formed when p-methylaniline (p-CH3C6H4NH2) is treated with each reagent. a. HCl b. CH3COCl c. (CH3CO)2O d. excess CH3I e. (CH3)2C = O f. CH3COCl, AlCl3 g. CH3CO2H h. NaNO2, HCl i. Part (b), then CH3COCl, AlCl j. CH3CHO, NaBH3CN
- Draw the products formed when ethylene oxide is treated with each reagent. a. HBr b. H2O(H2SO4) c. [1] CH3CH2O; [2] H2O d. [1] HC ≡ C−; [2] H2O e. [1] −OH; [2] H2O f. [1] CH3S−; [2] H2OQ1. Name parts a through d - draw parts e through h: CH3-CH2-CH-CH,-NH, ČH3 a. b. CH3 'N' H3CH2C ČH3 с. NH2 Br d. e. 2-chloropentan-2,3-diamine f. N-ethyloctanamide g. N-ethyl-N-methylbutanamide h. 3-methylbutan-1-aminecompound a HC=CH a. b. compound f Reagents HCI HBr H₂O, H₂SO4 C. d. Br₂ e. Cl₂ r compound d compound j compound i n compound h compound c compound b n HC=CH m. n. O. compound g compound e HC=CH 2 equivalents of NaNH₂ H₂, Lindlar's catalyst Na/NH3 p. H₂SO4, HgSO4 q. (sia)₂BH then H₂O₂, NaOH Pr
- 24. Which compound has a conjugated system? Yo 2 3 a. only 1 b. only 2 c. 1 and 2 d. 1, 2 and 3 25. What is the major organic product obtained from the following reaction? ELECTROPHILIC ADDITION HBr (1 equiv) Me Me Br Br Me Me. Me Me 2 Br Br Me. Me. Me Me 3 4 a. 2 and 4 b. 1 and 2 c. 2 and 3 d. 1 and 3 ELECTROPHILE: HB SUBSTRATE: 2-BromoBUTANE (DOUBLE BOND BETWEEN 2ND + 3RD CARBON (Azores) 26. Which of the following dienes cannot undergo Diels-Alder reactions? о 3 2 1 a. only 4 b. only 3 c. 2 and 3 d. 1 and 4 27. Which of the following dienophiles is the most reactive in Diels-Alder reactions? a. 1 b. 2 c. 3 d. 4 人 OCOMe COME OMe 3 4 2 117. What is the missing reagent in the reaction below? aq. HCI A. CH2(COOE1)2, NaOEt C. CH2(COOE1)2, HOAC B. CH3CO2Et, NaOEt D. CH3CO,Et, HOAC 18. In several reactions of carhonyl compounds that we have studied, the reaction proceeds by cQuestion 23 Give the reagents. mCPBA O 1. BH3, 2. H₂O2, NaOH KMnO4 O 03 O 1. Hg(OAc)2, H2O 2. NaBH4 H I,. I"