Question

Draw a Newman projection for the lowest-energy conformation of 2,3-dimethylbutane about the C2C3 bond.

Answer 1

ска 2,3-dimethyl butane -) З 4 са

ен СН3 Go , е на Не Goo - к Н Ке Every high sterie Strain as two CH3 group are at oo свъXн сH3 H Н Үсэх, 2-gauch interaction is present. are at 600 енз с 12 Н. rotation Н. rotation ни с не на Я [high steric strain] 3-gauche interaction сH2 H H. H rotation не сня Х сня 2- gauche interaction Cless sterie strain so lowest CH3 energy conformation) Зо lowest energy conformation where - - two methy) (-CH₂) groups and СВз 60° 60° H. Y Не Н. сня the X CH [high steric strain as 2CH3 are at oo 3-gauche interaction Н. сH3 ня- е