Question

A) this corresponds to an anti conformation in general, gauche conformations possess the lowest post it is stabilized by intramolecular hydrogen bonding D) it is a staggered conformation. E) it has the highest energy of all the possibilities sible minimum e gy Section 2 Give the IUPAC name corresponding to the followin onding to the following structure: ection formula for the most stable conformation of the C2-C3 2) Draw the Newman projection formula for the most stable bond in 3-methylpentane.

Answer 1

Solution . The given molecule - CH2 - CH2 (Etylene glycol) OH 014 A) Anti Conformation. OH It (two - Oh one opposit direction). 014 B) Ganche conformation and of Intramoleculers t-bonding. O- H H -bonding Gauche Contormer will be most stable in case of eHylene glycol. Eclipsed and staggered sant Conformers are not the most ( Gauche), so stable. This is due to less Steric strain in gauche conformez as componed to eclipsed Conformed through strains one cess in staggered/anti Conformer but extent of H-bonding in go e Conformes is more which makes it most stable. H o staggered Conformation, UH I E) Highest Energy Eclipsed Conformation . Although hydrogen bonding is also Possible in eclipsed Conformes due to tonnosional strain it be come lease stable So, the onder if stabilility of Hylene glycol Conforms is Eclipsed <anti form / staggered gauche Inenease Energy &

Section 2 1. IUPAC name of the following Compound- HO 1 Y Yo (2- Ethyl-1,5,6-trimethyl-1-heptanol ) 2. Newman Projection for the most stable conformation of the Cz - Cz bond in 3-methylpentane la CH3 no CH3 onsdlig sorroot moet H CH3 - ent3 -CH3 ( Carbon atom) and - Gits (Co-Cerbonatom) one anti Panallen each other. It is the most stable Conformation.. A I leon est for H o tm prel of lub di chit C2H52 toetus rinore wirela elorurorte hausbrand seeriratiro be dribrod Hlo durot xs tid senrot na iting honoppole rire who hria girono ei nenorodno enoor mi