Show all products of the addition methods from these sections to 1-hexyne and 2-hexyne.
a) 1 eq HCl
b) 1 eq Br2
c) 2 eq Br2
d) Hydroboration-oxidation
Show all products of the addition methods from these sections to 1-hexyne and 2-hexyne. a) 1 eq HCl b) 1 eq Br2 c) 2 eq...
2. Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above 3. Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (C) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using...
1) which of the following additions to alkenes occur specifically in an ANTI fashion? a) addition of H2 b) addition of Br2 c) hydroboration-oxidation d) addition of H2O in dilute acid e) both A and B 2) which of the following additions to alkenes occur specifically in a SYN fashion? a) addition of H2 b) dihydroxylation using OsO4, H2O2 c) hydroboration d) addition if HCl e) A, B, and C please explain what definitions you need to know to answer...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using 03, Zn...
_11. Which of the following are possible products in the reaction below? n 1 eq. Br2 CH2Cl2 Br Br. Yrity Bry Br Br Y Br A. 1 and 2 3 1 B. 2 and 3 c. 1 and 4 D. 2 and 4
Part B: Choose two other internal alkynes that will yield only one product upon hydroboration-oxidation. Check all that apply. A) 4-decyne B) 5-decyne C) 3-heptyne D) 1-propyne E) 3-hexyne Part A Explain why a single pure product is obtained from hydroboration-oxidation of 2-butyne, whereas two products are obtained from hydroboration-oxidation of 2-pentyne. 2-pentyne is symmetrical, and 2-butyne is not symmetrical. 2-butyne is a liquid under normal conditions, and 2-pentyne is a gas under normal conditions. 2-pentyne is a liquid under...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above
Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) Hz/Pt D HPA 1 point Br2 1 point 1. BH3 2. H2O2/KOH 1.5 points D 2. POKOH Brito Br2/H20 1.5 points
2. Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) Н2/Pt 1 point Br2 1 point 1. BH3 2. H.О2/КОН 1.5 points 1.5 points Br2/H20
What reagents would you use for each of the following syntheses? Part A 3,3-dibromohexane from 3-hexyne -Br2 (1 mol)/CH2Cl2 -HBr (2 mol) -HBr (1 mol) Part B 3,3,4,4-tetrabromohexane from 3-hexyne -Br2 (2 mol)/CH2Cl2 -Br2 (1 mol)/CH2Cl2 -HBr (1 mol) Part C 3-hexanone from 3-hexyne -aqueous H2SO4, HgSO4 -CH3C?C? followed by 1-chloropropane -excess H2, Pd/C
Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) H2/Pt 1 point Br2 1 point 1. BH3 2. H2O2/KOH 1.5 points D Br2/H2O Brytzo 1.5 points