Which of the following is a hemiacetal?ОНОНA) H;C-C-OHВ) Н,С-С—ОСHНнОНнс-OCH3D) H,C-С—ОСН,С) НС-С—ОНÓCH3нAD

Hemiacetals are having two oxygen atoms directly attached to the same carbon atom and in the two…

Answered: Which of the following is a hemiacetal?…

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter14: Aldehydes And Ketones

Section: Chapter Questions

Problem 14.23E

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Which of the following is an acetal? ОН ОН А) H;С—С—ОН B) H;C-Ċ-0CH; OH OCH3 С) НС—С—ОН D) H;C-c-oCH; ÓCH;
Step 2: A hemiacetal formation has a similar mechanism to the hydrate reaction, except 1 equivalent of alcohol is added instead of water. 1² R₂ R₁ LOR3 R₁ R₂ The hemiacetal reaction is also reversible and can also be catalyzed by either acid or base. Hemiacetals are not usually isolated, except in the formation of 5- and 6-membered rings, as often seen in carbohydrate chemistry. Identify the hemiacetal formed from the intramolecular cyclization of the molecule shown. OH H OH R3OH OH OH OH CH₂OH NaOH ?
Which of the following is an acetal? H3C H;C но CH3 CH3 H3C- H3C H3C H3C OH А C A and C B and D A O A, B, and D D B.
COH [H] HO, [0] OH Draw the resulting hemiacetal
7) Which structure below represents a ketone? A) CH3CH2 0– CH,CH3 B) II C- Он C) CH3CH2C H D) -ċ-CH3 E) -NH2
O Draw the major organic product that contains the carbon labeled with a * (do not include я ня - Base:
Draw the product formed when pentanal (CH3CH2CH2CH2CHO) is treatedwith following reagent. With some reagents, no reaction occurs. [1] HC≡CNa; [2] H2O
Draw the products formed when phenol (C6H5OH) is treated with following set of reagents. [1] (CH3CH2)2CHCOCl, AlCl3; [2] Zn(Hg), HCl
8) OH ел 'H HCI H2O W How many stereoisomers are possible for this cyclic hemiacetal? OH
Which of the following represents a hemiacetal? Et =ethyl H HO OH A x CH3O OCH3 B H HO OEt C D
Give the mechanisim? он
What product forms when the compound below is treated with Benedict's reagent? CHO H -C-OH CH,OH A) ÇH,OH H –Ç–OH CH,OH B) СНО C=0 CH,OH C) ÇOOH Н—С—ОН CH,OH D) ÇH,OH Но—ҫ—ОН CH,OH MacBook Air

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Which of the following is a hemiacetal? ОН ОН A) H;C-C-OH В) Н,С-С—ОСH Н н ОН нс- OCH3 D) H,C-С—ОСН, С) НС-С—ОН ÓCH3 н A D