Practice HW-OChem-II

Complete the following reactions with the correct steriochemistry

Some important notes: • Draw the major product, or products, of the reaction in the drawing area below. • If there aren't any products, because no reaction will take place, check the box below the drawing area instead. ⚫ Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. Predict the major products of the following organic reaction: ? AL- + ? 8 X 5 TH 10 ☑

H12.3 - Level 2 Unanswered • 3 attempts left What is the stereochemistry of the major product(s) formed? Are they enantiomers, diastereomers or the major product is achiral and only one product produced? O Hold and drag to reorder 1. = Enantiomers 2. = Diastereomers Achiral only = one product produced HBr 1) HBr 2) HBr 3) 3.

08.20b 1) ВН, THF 2) H,O2, NaOH Modify the given carbon skeleton to draw the major product(s) of the given reaction. If a racemic mixture of enantiomers is expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time. CH

10- Two structures of glucose are shown below. CH₂OH HO HO OH LHa OH a-D-glucose HO,,. HO f) Draw the mirror image of a-D-glucose. d) How many possible stereoisomers? e) What is the relationship between a-D-glucose and B-D-glucose? CH₂OH OH OH Ha B-D-glucose Enantiomers/ diastereomers / conformers / constitutional / isomers

Draw a structural formula for the substitution product of the reaction shown below. ● H3C HH Br + O • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If more than one stereoisomer of product is formed, draw both. Separate multiple products using the + sign from the drop-down menu. • Products that are initially formed as ions should be drawn in their neutral forms. ▼ In [F OCH 3 -85 ? Na CN CH3CH₂OH ChemDoodleⓇ >

1. Identify whether the following alkenes have E or Z stereochemistry (where there are multiple alkenes, determine the stereochemistry of the one indicated by an arrow). HO Br OH & e) OH Br

Draw the major product(s) of the following reaction. KMNO4 H20 You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • Draw organic products only. • If there is more than one major product possible, draw all of them. • Separate multiple products using the + sign from the drop-down menu. opy aste

H- CO₂H CH3 F Select the appropriate stereochemical designation based on the Fischer projection shown above.

Draw a structural formula for the substitution product of the reaction shown below. n progress of CI H CH3O H₂O Use the wedge/hash bond tools to indicate stereochemistry where it exists. If more than one stereoisomer of product is formed, draw both. Separate multiple products using the + sign from the drop-down menu.

4

Select any of the following that describe the stereochemistry of the molecule that is shown on the image.

I need help with this please

Draw a structural formula for the substitution product of the reaction shown below. F + - || Na' OCCH3 CH3 CH3CO2H • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If more than one stereoisomer of product is formed, draw both. Separate multiple products using the + sign from the drop-down menu.

Consider the following reaction. O + 0 CHBr3 Draw the major organic product formed in this reaction. 81 + [**** (CH3)3CO¹K+ • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • Show stereochemistry in a meso compound. If the reaction produces a racemic mixture, just draw one stereoisomer. - √n [F] ?

CH₂CH=CHCHCH3 CH3 + VIL • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • If there is more than one major product possible, draw all of them. Separate multiple products using the + sign from the drop-down menu. CH4 > / ? HBr ChemDoodle ? Sn [F

5) For the molecule shown below, draw the indicated stereoisomers in the boxes. a) Draw a meso stereoisomer b) Draw a chiral stereoisomer H₂N Bri Br NH2 c) Circle the chiral centers in the original molecule

NaBH4 ethanol OH OH hydrobenzoin (stereochemistry?)

Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers, different conformations of the same compound, or the same conformation of a compound viewed from a different perspective. Note that cis, trans isomers are an example of stereoisomers. НО. Br F Submit Answer OH F Br Br Retry Entire Group Br 1 more group attempt remaining

H12.5 - Level 2 Unanswered • 3 attempts left What is the stereochemistry of the major product(s) formed? Are they enantiomers, diastereomers or is there only one major product formed that is achiral? O Hold and drag to reorder 1. = Diastereomers Achiral 2. product Diastereomers = Enantiomers = Enantiomers dilute 1) H,SO, dilute 2) ? H,SO,

Predict the major products of the following organic reaction: CN + Some important notes: • Draw the major product, or products, of the reaction in the drawing area below. If there aren't any products, because no reaction will take place, check the box below the drawing area instead. • Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. No reaction. Click and drag to start drawing a structure. U₁ X

C ← 1750 Draw the two major products of this reaction. Use a dash or wedge bond to indicate stereochemistry of substituents on asymmetric centers, Ignore inorganic byproducts. 1. BH3-THF 2.H2O2, NaOH, H₂O Select to Draw + V o Proble

Ff.95.

Q#3 a) Draw all possible stereoisomers of 4-methylnon-2-ene, and name each isomer, including its E,Z and R,S prefixes. b) Label 2 pairs of enantiomers. c) Label 4 pairs of diastereomers.

Can you please help with drawing R,S and S,R diastereomers

Please Answer both the parts , otherwise I'll downvote

Draw the structure of the alkene with the molecular formula CH10 that reacts with Br, to give this compound. CH3 Br Br • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. opyste ot pt pt pt pt

The structure of 4 isomers of ketopentose are shown.  1) select every structure that is a diastereomer of structure D A, B, or C? 2) select every structure that is a enantiomer of structure C A, B, or D 3) select every structure that is a stereoisomer of structure C A, B, or D

Draw a structural formula for the substitution product of the reaction shown below. Br Na ОCH3 H3C CH3OH • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If more than one stereoisomer of product is formed, draw both. • Separate multiple products using the + sign from the drop-down menu. • Products that are initially formed as ions should be drawn in their neutral forms. C opy aste ChemDoodle'