Draw the structure of any diastereomer of (2R,3S)-dichloropentane. Take particular care to indicate three-dimensional stereochemistry detail properly.
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- Draw the structure of a meso form of 1,3-dichlorocyclopentane. Take particular care to indicate three-dimensional stereochemistry detail properly.a) Considering compounds 2a through 21, identify: ONE PAIR of geometric isomers; TWO PAIRS of enantiomers and THREE PAIRS of identical molecules. b) Give the names, including the configurations, of each of the geometric isomers and of each of the enantiomers. Draw the relevant structures in the space provided in the Answer Booklet. c) Sort compounds 2a, 2b, 2c, 2f and 2k in order of increasing solubility in water and briefly justify your ordering. 2 НО. AH H H anulta HOwno barwolset of ef 28nuor OH 2bc 2c ning) bi 10291 H WH 2 st brbot di OH Lacenoqoid OH to nabio ni one nt at dit st 2e OH "H OH bre 2a 2d 2g 2j H HO 2h 2k HO ...H di al nt o 2f 2i 21Consider the reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide. (a) Draw the organic product and clearly indicate stereochemistry by showing the hydrogen on the chirality centers and using wedge and dash bonds. (b) Then analyze the stereochemistry of the product. -SH C NaOH Draw only the organic product. Select /// Draw Rings More C H S Erase:
- Draw a line structure clearly showing the stereochemistry of (3S,4S)-4-hydroxy-3,5-dimethylhexanoic acid.Draw the structure of (E)-3-isopropyl-5,5-dimethyl-2-hexene. Consider E/Z stereochemistry of alkenes. You do not have to explicitly draw H atoms. opy aste ChemDoodleFor conjugated C=C with carbonyl group or another double bond, lower frequency for vibration and lower force constant is needed? Why?
- The structure of A is shown below. HO 3 -CH2CH=CH2 A (i) Predict the possible number of stereoisomers A can have. (ii) Draw the 3D structure of the (25, 3R, 5S) enantiomer showing its correct stereochemistry. (iii) Calculate the specific rotation of each enantiomer in a mixture containing 10 mL (0.10 M) of (2S, 3R, 55) enantiomer and 30 mL (0.10 M) of (2R, 3S, 5R) enantiomer. Given the specific rotation of the mixture = +4.8°.Draw the structural formula of the major product of the reaction of (S)-2,2,3-trimethyloxirane with Me,NH. • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it.Draw the structure of zinc 3,7,11- trimethyldodecanoate. • Consider E/Z stereochemistry of alkenes. opy aste ノ/
- Draw the structure for (E)-1,3,3-tribromo-2-methylpenta-1,4-diene. Be sure to clearly depict the geometric isometry by adding all bonds, including those to hydrogen, to sp2 stereocenters.Draw the structure of the following three isomeric esters with chemical formula C-H1,0,. Ester #1: (E)-ethyl 2-pentenoate Ester #2: ethyl 3-methyl-3-butenoate Ester #3: (Z)-methyl 3-hexenoate • Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures with + signs from the drop-down menu. opy aste ChemDoodle Previous Next Email Instructor Save and Exit2) Hex-1-yne is a hydrocarbon with a terminal H-C=C-(alkyne) group. The remaining part of the molecule contains CH₂ groups and a terminal CH3 group. The IR spectrum of hex-1-yne shows relatively strong absorptions at 3311, 2962, 2937, 2876, 2120 cm¹ as well as absorptions below 1500 cm ¹. Which bands are assigned to the C=C and terminal H-C(alkyne) stretches? (10 points) a) C=C, 2120 cm¹; H-C(alkyne) 3311 cm-¹ b) C=C, 2962 cm¹; H-C(alkyne) 3311 cm ¹ c) C=C, 2120 cm¹; H-C(alkyne) 2876 cm-¹ d) C=C, 3311 cm¹; H-C(alkyne) 2120 cm-¹