Question

please answer the following

15. Consider the MAJOR product outcomes when 8 reacts with Nal vs. NaOH. Select the correct outcomes from the table. (Hint 1: for both Sn2 and E2 leaving group must be axial; for E2, the B-hydrogen must be 180° away from leaving group). (Hint 2: For 2 RX substrates, products depend on conjugate acid; i.e.strong acids have weak conj. bases compare to problem #20, 21). 8+ Nal yields products with --- ? 8 + NaOH yields product with---? A) Two stereogenic centers, S.S Two stercogenic centers, S.R Two stere Alkene with 1 hydrogen on alkene carbons Two stereogenic centers, RR B) C) Alkene with 1 hydrogen on alkene carbons Two stereogenic centers, S.R D) Alkene with 1 hydrogen on alkene carbons Alkene with 2 hydrgoens on alkene carbons IV. ARADA 16. When compound 16 reacts with the two bases in this table, which hydrogens are removed in each case? NaHCO3 (15% solution) NaOH (15% solution) A) 3 only 2 and 3 B) 2 and 3 C) 1 and 3 All D) None 2 and 3 17. What is true about this equilibrium? 'oro" =ON A) It lies to the right because of size of atom with negative charge. B) It lies to the left because of size of atom with negative charge. C) It lies to the right because of delocalization of charge through o system. D) It lies to the left because of electronegativity of oxygen vs. nitrogen. 18. What evidence might be found in the FTIR spectrum that would confirm that the C-Hd bond in 17 is the strongest in the molecule? A) The IR vibration for C-He would present at 3500 cm-1, which has more energy than any of the other stretches. B) The IR vibrations for C-H C-He would present at 3000 cm-1, which have more energy than any of the other stretches. C) The IR vibration for the would present at 3500 cm-1, which has more energy than C-H. CEC stretch. D) The IR vibration for would present at 2400 cm-1, which has more energy than any of the other stretches. 19. What reagents will accomplish this transformation? A) 1.H2SO. 2. HBr 3. KOBU B) 1. NaOH 2 H2SO4. 3, H2O C) 1. HBr 2. NMes 3. KO'Bu D) 1. NaBr 2. H2O 3. NMes

Answer 1

The products and statements can be concluded as-

AI LA Í morgan SN2 NaOH (cgc) Exco < Alkane with а сп. - Alkene with TH on alkene Hydrogen Jul I - confi at C,=5 contio at Ca=s Two stereo genic centres, S, s. - 15 OH OH NaHCO3 (wecek baje) HO OH '} u not ban acidic H NAOH - Strong computed to/ Nulco) Matt Coz remove only strongest acidic H and Mona &-oh are more acidic than optim A is correct. Phenolic oH .:

AI LA Í morgan SN2 NaOH (cgc) Exco < Alkane with а сп. - Alkene with TH on alkene Hydrogen Jul I - confi at C,=5 contio at Ca=s Two stereo genic centres, S, s. - 15 OH OH NaHCO3 (wecek baje) HO OH '} u not ban acidic H NAOH - Strong computed to/ Nulco) Matt Coz remove only strongest acidic H and Mona &-oh are more acidic than optim A is correct. Phenolic oH .:

The eqbh lig to left because of Electronegativity las size is almost syne) cy Onygun ve Nihogen. More is an than a charge dupeesim high ) more u stability G The IR vibration for Ec-H are observed at 3300 cm? und fer =c-H it is 3000 – 3100 cm? and for Csp3 -H 2850 - 3000 cmt. - IR for G Ha > Ha, Ho. > Me. so option A ý correct. - N 9 -HO Į Å Br Ko Bu Bulky Ban HH Nez tume -NMez Bulky Bare thus remove acidic Hydrogen from wys hindered side
so, in 15 ,16, 18 option A re correct , in 17 option B and in 19 option C is correct.