wanamsonether synthesis fall? 20 case 21 which of the folowing reagents should b
ID: 505950 • Letter: W
Question
wanamsonether synthesis fall? 20 case 21 which of the folowing reagents should be used to prepar buty ethyl ether? A) butyl bromide and sodum e) butyf alcohol and ethyl bromide c) butyt alcohol and ethanol petassum tert tutokeide and ethyl bromide 22 which the 2 methylpropene and propanol acetic acid and 1 propanol c) 2-methylpropene. Haso. and 1 precanol D) 1-propyt bromide and tert-butyl alcohol 23 Ethers may be used as selvents because they react only with c) oxidizing agents D) reducing agents 24 What are the products when ethyl isopropyl ether is cleaved with concentrated HI? AJ ethanol and 2-ledo-2-methylpropane a) ethanol and 2-methylpropane c) lodoethane and isopropyl alcohol iodoethane and 2-methylpropane 25 what are the products when tert-buty ethyl ether is deaved with concentrated Hm iodoethane and Dent-butanol iodoethane and 2 c) ethanol and D) ethanol and tert-butanol 26 which par of products would result from the acid age of tert-buty propy ether with excess concentrated HBr at an A) tert-butyl bromide and propyl alcohol tert-butyl bromide and propyl bromide c) tert-butyl aloohol and propyl bromide D) 2. Her at an 27 which pair of products would result from the acid cleavage of phenyl propyl ether with excess concentrated elevated temperature? AJ Phenol and 1-propanol Bromobenzene and 1 propanol B) Bromobenzene and bromopropane D) Phenol and 1-bromopropane 28 Gve the expected major products of the following reaction. Ha, 20 A) recovered starting material (no reaction) 29 Whnt the ma unt of the following redExplanation / Answer
All these are based on ether preparation and cleavage reactions.
20) option D (teretairy halide)
21) option D
22) option C
23) option A
24)option A (preferablt by SN1)
25) option A (by SN1)
26) D (SN1 with competitive E1 at elevated temperatures)
27)Daromatic ethers always give phenol only, no further cleavage possible.
28) B
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