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- CH3 CI-s-CH3 1. + N(CH2CH3)3 ? 2. NaSCH2CH3 НО Predict the product(s) that will form in the reaction scheme above. Select the answer below that describes the product(s): A single achiral product forms A single chiral product forms Two achiral products form, and they are constitutional isomers Two achiral products form, and they are diastereomers Two achiral products form, and they are unrelated to each other Two chiral products form, and they are constitutional isomers Two chiral products form, and they are diastereomers Two chiral products form, and they are enantiomers Two chiral products form, and they are unrelated to each other Three or more achiral products form Three or more chiral products formExplain the observed stereochemistry. When the second intermediate is redrawn from the following perspective, it becomes clear that O the electrons in the carbon-carbon-bond come from above the carbon-oxygen bond, allowing for the chirality center to be generated with the stereochemistry shown. O the electrons in the carbon-oxygen-bond come from above the carbon-carbon bond, allowing for the chirality center to be generated with the stereochemistry shown. the electrons in the carbon-carbon-bond come from below the carbon-oxygen bond, allowing for the chirality center to be generated with the stereochemistry shown. O the electrons in the carbon-oxygen-bond come from below the carbon-carbon bond, allowing for the chirality center to be generated with the stereochemistry shown.Myo-inositol, the most prominent naturally occurring form of inositols, is a carbocyclic polyol that plays an important role as the structural basis for a number of secondary messengers in eukaryotic cells. It is generated in vivo from the aldol cyclization of glucose-6-phosphate to myo-inositol-1-phosphate
- A product of the hydrogenation of 3,4-dimethyl-3-hexene is shown in the box. Which of the following best describes the product(s) of this reaction? H2 3,4-dimethyl-3-hexene Pd 1 chiral pdt formed 2 chiral pdts formed and they are diastereomers 2 chiral pdts formed and they are enantiomers O 1 achiral meso pdt formed 1 achiral pdt with no stereocenters formed17) Specify the stereochemistry (R or S) at each of the following stereocenters. Write your answers in the boxes provides. Br H3C H •H • OH CH2CH3 SH ОНrivatives: Nucleophilic Acyl Substitution Reactions - EOC O C-O [References] One step in the gluconeogenesis pathway for the biosynthesis of glucose is the partial reduction of 3-phosphoglycerate to give glyceraldehyde 3-phosphate. The process occurs by phosphorylation with ATP to give 1,3-bisphosphoglycerate, reaction with a thiol group on the enzyme to give an enzyme-bound thioester, and reduction with NADH. H-C-OH ATP ADP CH₂OPO32- 3-phosphoglycerate 0= OPO32- C H-C-OH CH₂OPO32 1,3-bisphosphoglycerate Enz-SH PO43- O= C S-Enz H-C-OH CH₂OPO3² (Enzyme-bound thioester) NADH/H+ O=C NAD*, Enz-SH H H-C-OH CH₂OPO3²- glyceraldehyde 3-phosphate Propose a structure for the first intermediate in the reaction of the enzyme-bound thioester with NADH to form glyceraldehyde 3-phosphate. To simplify the drawing process, substitute the structure below for the enzyme-bound thioester. S-CH3 substitute for the CH2CH3 enzyme-bound thioester You do not have to consider stereochemistry. • You do not have…
- 2305032118517 CHO H-C-OH H-C-OH H₂C₂OH CHO Ho-C-tt A D-aldotetrose yields a mixture of the two compounds shown below when subjected to Kiliani - Fischer Chain extension synthesis. What is the Structure of the aldotetrose? 3 CH₂OH Compound I H-C-OH CHO HO-C-H Ho C-H сно HO-C-H WOO Н-С-он H-C-OH CH ₂ OH Compound II CHO H² C-OH HO-C-H CH₂OH CH ₂ OH CH₂OH CA) (B) (D) (E) Both choices (B) and (C) could be the correct structure of D-erythrose. CHO H₂C-OH HC OH CH ₂ OH ctrl MAND optionWhat products are formed from monochlorination of (R)-2-bromobutane at C1 and C4? Assign R and S designations to each stereogenic center.Draw all possible stereoisomers for 4-fluoro-2-pentanol and label any erythro or threo enantiomers, explaining how you assigned them. Ensure that you indicate which stereoisomers are related as enantiomers and which as diastereomers.
- How many chirality centers are contained in (a) the aldotetrose and (b) the ketopentose just given below? How many stereoisomers would you expect from each general structure? CH,OH C=0 Н-С—ОН Н-С—ОН Н—С—ОН Н—С—ОН ČH,OH CH,OH A3. Cinnamic acid (shown) reacts with bromine to give a bromination product. (a) Draw all four possible stereoisomers of this reaction as a Fischer projection. Label each molecule as A, B, C, and D. (b) Identify the pairs of enantiomers (c) Identify the pairs of diastereomers (d) Identify which pair corresponds to addition to trans-cinnamic acid. Briefly explain your reasoning. O OH Br₂ CH₂Cl₂Draw all of the possible stereoisomers of the compound shown. Group them as enantiomeric pairs, or indicate any meso compounds. Label all stereocenters with the absolute stereochemistry (R or S).