Question

4. (4pts) A mass spectrum shows significant peaks at m/z 87, 115, and 143. Which of the following compounds is responsible for that mass spectrum: 4,7-dimethyl-1-octanol, 2,6-dimethyl-4-octanol, or 2,2,4-trimethyl-4-heptanol? Provide structures of the cationic fragments that support your choice and provide the mechanism for the formation of ONE of these fragments from the molecular ion. он он но

Please show all work and explanations if possible. Thank you so much!

Answer 1

- OH Anst 212,4-timethyl- 4-heptano). The above compound is responsible for shows significant peak at ma-87,1154143 in mass spectrum Ml2 = 115 M12=143 _H M/387 a mechanisms? 0 2 COH M12 - 158 -H -184 [01-15 ] ont + X M/2=143

M-43] 01/22 115 M/20158 Me8+ MIR 138

Ans