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- Q2. Provide the reagents O OMe OMe CO₂Me CO₂Me5. Provide the structures for the following Lettered compounds 'A' through 'G'. Mwidestrich H+, H₂O C D ОН LH G BH3.THF H₂O2, NaOH CH3 KMnO4 KMnO4 Na E A Mg Ether HCI R-CI Br B F2. Consider the following organic molecules A-H. Many of them are natural products isolated from Nature. Please answer the following questions by writing the Letter pertaining to each molecule next to the question. -N- H;C "CO,H N. Но CH2 ČH3 B strychnine (a plant alkaloid) hirsutic acid A nepetalactone (essence of cutnip) (a fimgul metabolito) H- H. I CH,0 E helminthosporal (a imgal toxu) D progesterone F cantharidin (a progestin hommone) (am insect vesicant) Br NO2 Br CI G untenine C (E)-1,6-dibromo-2,7-dichloro-3,7-dimethyloct-3-ene (fom red algae) (4 sponge metabolite)
- 6. Write chemical structures for compounds A through D in the following sequence of reac- tions. Compounds A and C are alcohols, one of which is cyclic. A C B + D Na NH, NH3 (0) HBr, heat B + NH3 D CH₂CH₂0-2) complete the reaction: SO3 H2SO4 NO2i. LIAIH4 i. deprotection .CO2ME J CH2=CHCOCH3 protection ii. H3O* ii. dehydration K The synthesis of K from H involves a 3-steps reaction as shown above. i. Draw the structures of I and J.
- Consider the following compounds OH OH D A NH2 H E F The most basic compound is Choose... + The compound(s) that is (are) 2º alcohol Choose... + The compound(s) that is (are) considered as hydrocarbon Choose... The compound that has the strongest hydrogen-bonding is Choose...8c) What is the relation between the following pairs H₂C O a. Cis-Trans O b. Structural O c. not isomers O d. Identical H3C CH3 H₂CH.A 16. Provide a structure for compounds A, B, and C. C? Br9 Br ,H 1. XS LDA 1. NaH H20 В. 2. H30* А. 2. С. Br TFOH, CF3CH2OH Br 出ぐだ B.