1. B2H6, diglyme (a) 2. H2O2, HO, H20 (b) The product or products of the reaction are characterized as being R,R. racemic. S. diastereomers. R. S,S. O O
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Draw the reaction and choose the correct characterizations
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- Determine the double bond stereochemistry (E or Z) for the following molecules. F. H3C C A CH3 F. H B D Br2. Which of the following is NOT an organometallic compound? A. CHỊCH,CH,Li (CH₂)₂Zn D. K [O-C(CH₂))]¯ B. (CH₂CH₂) Pb C.Q1. Give the structure(s) of the major organic produc(s) of A-H , Show stereochemistry if appropriate. H2, Pd/C KMNO4, H2O В 1. ВН3 2. NaOH, H2O2 Cl2, CH3OH D Br2 HCI KI, H3PO4 KMNO4, H3O" G
- What product(s) is(are) formed in the following reaction Br/CH-Clz Br plus enantiomer H3C Et Br Br H and H3C Br H3C Et Et Br он ...Et plus enantiomer H3C Br4. Fill in the missing information (reactants, products, or reagents) in the following transformations. If more than one product is possible, draw structures for all products and indicate the major product. If stereoisomers are possible, draw all isomers, and indicate the major stereoisomer. + a. C. d. e. НО. НО. CI OH OH X PCC NaOCH HBr SOCI J.... CI OH Focusg. cis-3-methylpent-2-ene with BH3, H2O2, and OH CH3 H3C- CH =C -CH2-CH3 Major Product(s) of g. Stereochemistry of the product described in g. (Circle one) а. R b. S С. Е d. Z e. a mixture of E and Z f. erythro g. threo h. a racemic (50/50) mixture i. all 4 products (a set of erythro and a set of threo) j. no stereochemistry
- Q1. Give the structure(s) of the major organic produc(s) of A-H , Show stereochemistry if appropriate. H2, Pd/C - A KMNO4, H2O В 1. ВНЗ. 2. NaOH, H202 C Cl2, CH3OH D2. In aqueous solution d-glucose (or dextrose) exists in equilibrium between a linear and cyclic form shown below. A. Mark all the stereocenters in the linear form of the molecule. Number them 1,2,3, etc. B. Draw out the reaction that converts the linear form to the 6-membered ring using the arrow formalism. C. Identify the stereocenters in the 6-member ring that correspond to the stereocenters in the linear form marking them as 1,2,3, etc. The reaction also created a new stereocenter. Mark it as H -OH HO--H H--OH нон Ho но HO HO H он H-OH H но.8. What is the correct order of stability, starting with the most strained, for the conformations shown below? H. H3C a. A, B, C; CH₂CH3 H H CH3 A b. B, A, C; H. CH3 CH3 B H CH₂CH3 CH3CH₂ CH3 CH3 H HD" H. c. C, A, B; C d. C, B, A.
- 4. 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 DiastereomersС. (1) BH3 (2) H,O,. H,O, NaOH Product is (circle one) i. A racemic mixture ii. A single enantiomer, iii. Achiral or meso D. txt. CI Ci4. Name the bicyclic ring systems below. A B & B D 5. Why is the following molecule too unstable to exist?