Question

DS-Chupane 13) 13) Which of the following cannot be made by the reduction of a ketone or aldehyde with NaBH in methanol A) 2-methyl-2-propanol 3) 1-butanol 2-methyl-1-propanol D) 2-butanol 14) Which of the following reagents would react with a primary alcohol to produce an aldehyde as the final product? A) PCC B) H2SO4 CH2C04 D) CH3MgBr, followed by HCI 15) Which one of the following is not oxidized by K2Cr2O7 in H2SO4/H1207 A) isobutyl alcohol B) butyl alcohol C ebutyl alcohol D) n-butyl alcohol 16) Which of the following methods will NOT produce an alcohol as the product? A) hydroboration-oxidation of an alkene B) oxidation of an aldehyde Cacid-catalyzed hydration of an alkene D) reaction of a Grignard reagent with an aldehyde

Answer 1

Reduction with NaBH4.

13 Aldehy des Cor) Ketones ave reducion with NaBHy +b bom Coryes ponding alcohols Ci,alceh) es Heve 8iven Produut NaBHy снзон o Butano Butamal Al duhyds NaBHy CHзеон OH Ketones C 2- Butamone) 2-Butamol NaBHy 3 снgон ott 2-imethyl -1-Propan 2-inethyl proparral CAlduhy des) But c otH 3 2-methyl -2-Propamal camt be tmed becaue iti f-alcohols not bdmed in NaBH4 Yeaons Key i covreed-auswev