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- d) H3PO4 + 5 HBr PBrs + 4 H20 e) 3 Fe(OH)2 + 2 H3PO4 Fe(PO4)2 + 6 H2O f) 2K + Br2 2 KBr Teve Closed - enerqy ISoluplease explain (2 R,4 S)-2,4-Dichloropentane and (2 S,4 R)-2,4-dichloropentane are: O A. constitutional isomers. O B. enantiomers. O C. diastereomers. O D. identical. O E. conformational isomers.4. The following molecule was subjected to two different conditions. Provide the product in each case. 1. Mel, K₂CO3 2. Ag₂O, A mCPBA, Δ
- chem 534 cha Hư OAC H please show stereochemistry H₂ COCH ? H CO₂CH3 O Ac 2. + ? hv 9 40°C 3. H₂ C 4. 0°C Catq Q-0 + [6+4] NGC ?. لك 5. [ V-CO₂CH3 + II NCCN [4+2] C6H5 6. 2 C6H5Predict the product(s) for the following reaction. O ll + enantiomer I OI ||| OH O IV OH CN OH + enantiomer || 1. NaCN 2. H₂O CN "ОН + enantiomer ||| IV CN CNWhich molecule is labelled with the correct R and S descriptors? Br., R Br., R Br... S в кон ОА ов ос OD A R В S OH C OH R Br., S D S OH
- d. e. (Z) (H3C)2N. OCH3 CNenantiomers, or identical H₂CC. H Br Br HC. CN b. Label the following as structural isomers, conformational isomers, diastereomers, CN HO CH₂ Br H H H hundreds of H H H H-Br Bri OH HH OH Br OH O OH ÕH Br -CH₂ HO H HO- H OH HOH₂C H H HO H 5. Provide arrows for the reaction mechanism shown below. The arrows should show 'electron flow' as we've done in class and should be consistent with the formal charges that show up on the intermediates in this multistep process All the structures with relevant atoms are provided below H H Br H O RO-OR heat or hvi H HOH H HO H O O Br H H H OH OH H LOH H Br Br Br Br HO Br CO₂H H₂N-H CH₂SH H CH₂ Supply mechanisms for the following reactions showing all intermediates, all formal charges and using arrows to show 'electron flow'. The first two mechanisms represent an 'easy' and a 'hard' exam mechanism. HS. e Br HNH₂ OH CH₂ HOH N A you only need to show initiation and propagatin steps where n hundreds4. Study the reactions listed below and decide whether the products are going to be a mixture of enantiomers, diastereomers, or neither. i. ii. iii. iv. V. Reaction Cl₂₁₂ H₂ CC14 Pt H₂O* Br₂ H₂O CCL4, hv NBS HBr Products & Mixture Diastereomers