Question

please give an explaination for the correct answer too. thanks!

Part A CH3CH, CHC=CH CH, CH2CH3 Spell out the full name of the compound. 3-ethylhexyne Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

Answer 1

Answer Porta CH3 CH2 CHCECH CH₂ CH₂ CH3 Name of the compound : 3-ethylhex -1- yue or, 3.ethylheryne. explanation : accordingly • The name (nomenclature) of any compounds should follow the IUPAC nomenclature. • So accordingly to the IUPAC nomenclature of organie compound, first we have to consider the long chain hydrocarbon part. Then we have to start numbering of long chain hydrocarbon, starting from either functional group or priority based . step-1 H3 C- CH2 - CH CECH] CH₂ - CH2 - CH3 In this molecule -c=cH is get priority to the first. for cure -c=ch is alkyne motif and it will to the first for the long chain hydrocarbon alky the Lor Tority step-2 5-- - 5 - 2- 12C-CH2-CH-CEC ----- - - - --- CH2 - CHiga ella if one consider this (shown above) Long chain hydrocarbon part and it has five carbon length, 13°279 Hạ -45+ 4 -cha ! il --- Step-3 CH-CH2-CH3 5 6

it one consider this (sheron above) loug chain hybocarbon past and it has sixtite carbou length. step.4. Hzc - CH2 - Qiz cech Here the even though it is highest ie six chain hydrocarbon part. But it is not the able because alkyne is more priority than alkane. which is missed here. So these is not possible. 1oooo Now coseful analysis of step-2 vs step3 - 5 4 3 2 1 3 2 1 H3C-CH2-CH-CECH H2 - CH2H CH-CEC CH-CH2-CH3 CH2-CH2-CH3 ethyl slep-2 4 5 6 step-3 As in the case of step-3 it has highest number (ie six) of carbon chain in the long chain hydrocarbon so it is acceptable both priority and numbering. i six carbon so for that hex'. 1 ") it is alkyne system in in c-3 position one ethist substituent so for none nomenelature substituent with position will come first, so for that the correct name 3-ethylhexyne