5. Using any type of representation, explain why there are only three stereoisomers of 2,3-dibromobutane.
Why does 2,3-dichlorobutane have only 3 stereoisomers?
Propose a synthesis to produce (2R,3S)-2,3-dibromobutane from acetylene. You can use any inorganic reagents you'd like. You don't have to draw the mechanism - only provide the reagents needed for each step of your proposed synthesis. Br ??? HEH Br exclusive product
Using methyl iodide, CH3I, and sodium acetylide as the sources of carbon atoms, show how to synthesize meso-2,3-dibromobutane. You may use any other needed reagents or solvents, provided they do not supply carbon atoms to the final product. About 5 steps are required. Please write out the formulas of the reagents. Free Response (10 pts each) Read instructions carefully and write out your answers in detail. 1. Using methyl iodide, CHI, and sodium acetylide, Nat:CECH, as the sources of carbon...
Identify the three stereoisomers of the hydrobenzoin product using R and S descriptors. If there are three isomers, why are there only two product lines in the prelab table? compound mol. wt. (g/mol) mmol amount (g) (mL) m.p. (˚C) density (g/mL) ref. benzil 210.23 2.38 mmol .5g - 94-95 °C (lit.) 1.23 g/mL sodium borohydride 37.832 g/mol 2.64 mmol .1g - 400°C 1.375 g/mL ethanol 46.07 g/mol - - 5 mL - 0.789 g/mL meso-hydrobenzoin 214.26 g/mol 2.38 mmol .509g...
For 28, please explain the same stereoisomers ONLY USING R/S но он он он 0 он но (A) H он но CH3 Cl-H 28. Which molecule is the same stereoisomer as the one in this Fischer projection? Ci30. How stere cen this CH3 (B) H CH3 Cl C-C CH3 H Cl CH3 (C) CH3 (D) CH3 Cl Cl CH3 Cl CH3 Answers to Study Questions 1..B 2. A 5. C
or trans where approprium or stereoisomers. 5. Using only chair conformations, make and draw molecular models for all of the 1.4. dibromocyclohexanes. Clearly indicate which are related as conformational isomers and which are related as configurational isomers. Designate the configurational isomers as cis or trans. Explain which isomers equilibrate rapidly with each other interconvert). 6. Draw the two chair conformations of trans-1,4-dichlorocyclohexane. Construct a qualitative plot (reaction energy diagram) that describes the energy of the system as a function of...
I only need help with 5D) , please explain the thinking behind the rationale 5. Consider the reaction shown below: H CH3 Brg/ CH2Cl2 C=C meso-2,3-dibromobutane (as the sole product) Hac H a) Provide below a step-by-step mechanism for that reaction (10 points) When the reaction above is carried out with 1-phenyl-1-propene, four products are formed: | H Ph C=Ć Brz/ CH2Cl2 Br. Br BECOMH (19%) HU HECH Br Ph ul.C-CAH 181%] and нус Br (+ enantiomer) Hac Pn (+...
Could the Williamson Ether synthesis be carried out using any type of alkyl halide? Why/why not. Draw the mechanism for the Williamson Ether reaction using bromoethane and t-butyl bromide and relate it to your answer.
Suggest any three reasons why a person with type 2 diabetes might have trouble following the recommendations for diet and exercise to effectively manage her diabetes?
Please explain all three why they are either true or false: For any cryptosystem, we have H( P|C ) ≤ H (P). True/False A cryptosystem has perfect secrecy if p[x|y] = p[x] for each x in P and y in C. True/False One-time Pad has perfect secrecy if each possible key is used in only one encryption. True/False