H OMe OMe H (this enantiomer) a) BH, THF b) H₂O₂, NaOH then workup >90% e.e. racemic mostly one diastereomer <5:1 diastereomer mix product after these transformations

just part b. thanks.

Thanks!!

35. Identify a pair of enantiomers: H. H. Br-C-CI CI- -C-Br Br -CI CI- Br Br-C-CI Br- -CI CI-C- Br C--Br H. H. H. A a. A and B b. A and D c. B and C d. none 36. What mechanism(s) would you propose for the reaction below? Br CH,OH OCH3 a. SN2 & E2 b. SN1 & El c. SN2 & E1 d. SN1 & E2 6.

Based on the assigned substituent ranking, what is the configuration of the stereogenic center? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Prelab Question #4 Homework Unanswered Due Jan 30th, 8:00 AM b с R-enantiomer (clockwise) OS-enantiomer (counter clockwise) There is no stereogenic center in this molecule Unanswered 1 attempt left CH3 H4 2 c² Br 1 H₂C- CH3 3 Submit

What is the best description of the major product(s) of the following reaction? H₂, Pt A) A racemic mixture of enantiomers B) A pair of diastereomers C) Multiple stereoisomers D) An achtral molecule E) A single stereoisomer A

A. Stereochemistry. 1. Assign configuration (R /S) for all chiral centers on each molecule. CH3 CH3 CO2H Chup CO2H CH CH2CH3 HO O: -R OHO OH OH CH3 -R CH3 ČI H. Co,H H. Br cR)-penta-2,3-diene-2,4-diyldibenzene (R-3-chloro-5-iodohepta-3,4-diene I.

10. How many diastereomers are there for the compound shown? a) 1 b) 2 c) 3 HO HO d) 4 -OH e) 5 f) none of above

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 Diastereomers