The product of the following reaction is a mixture of 90% S enantiomer and 10% R enantiomer. Calculate the enantiomrric excess (ee) of the S enantiomer. And plesse explain how to solve! CO, O2, CuCl2 د c H3CH chiral catalyst S enantiomer CO₂H H3C H CO₂H R enantiomer
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- 2. Explain the stereochemistry and labelling pattern in this reaction. t-Bu enantiomerically pure 180 H₂SO4 HOAC t-Bu racemicWhat 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 BrAccount for the regioselectivity and stereoselectivity observed when this compound is treated with Hg(OAc)2 in H₂O Use wedge and hash bonds ONLY when needed to show reaction stereochemistry. . If the reaction produces a racemic mixture, just draw one stereoisomer.
- Predict 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 CNDetermine the double bond stereochemistry (E or Z) for the following molecules. F. H3C C A CH3 F. H B D BrPlease fill in the missing reactants, reagents or products in the following reactions. Indicate relative stereochemistry where it is necessary CI j)
- Determine the major product(s) of the following reaction: (En: enantiomer) Bľ2 Br, ? H,O ОН A) + En Br Br В) + En Br ОН C) + En HQ Br YOH D) + EnWhat is (are) the major organic product(s) obtained from the following reaction? Br2 O (2R,3R)-dibromobutane meso-2,3-dibromobutane O (2S,3S)-dibromobutane O Racemic mixtureWhich compound does not give two stereoisomers when reacted with Cl2 in CH2CI2? II II IV Link II II IV
- enantiomers, 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 hundredsDraw the structure of the major organic product of the reaction below. CH3CH2 CH2CH3 Zn(Cu) C=C CH212 ether H H • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Show stereochemistry in a meso compound. • If the reaction produces a racemic mixture, just draw one stereoisomer. opy aste ChemDoodlewhat is the molecular weight of [Ni(C4H3NCH=N-(CH2)3 -N=CHC4H3N]