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- H₂C ཏཱཏི 1 ནི OH 1. Br2, PBг3 2. H₂O H3C OH Br The a-bromination of carbonyl compounds by Br2 in acetic acid is limited to aldehydes and ketones because acids, esters, and amides don't enolize to a sufficient extent. Carboxylic acids, however, can be a-brominated by first converting the carboxylic acid to an acid bromide by treatment with PBr3. Following enolization of the acid bromide, Br2 reacts in an a-substitution reaction. Hydrolysis of the acid bromide completes the reaction. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions :0: H3C Br Br + :::OH2 Br H₂O H3C Br за3 Treatment of 1-aminoadamantane, C„H„N, with methyl 2,4-dibromobutanoate in the presence of a nonnucleophilic base, R,N, involves two successive S,2 reactions and gives compound A. Propose a structural formula for compound A. R&N NH, + Br. C15H93NO, + 2 R,NH Br OCH Br 1-Aminoadamantane Methyl 2,4-dibromobutanoate AGive the major organic product(s) of the following reaction. Draw Your Solution 27 H 1) NaBH4 2) H3O+ ?
- H3C OH 1. Br2, PBг3 2. H₂O H3C OH Br The a-bromination of carbonyl compounds by Br₂ in acetic acid is limited to aldehydes and ketones because acids, esters, and amides don't enolize to a sufficient extent. Carboxylic acids, however, can be a-brominated by first converting the carboxylic acid to an acid bromide by treatment with PBr3. Following enolization of the acid bromide, Br2 reacts in an a-substitution reaction. Hydrolysis of the acid bromide completes the reaction. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions Br Br зь P-Br Br H₂C H₂C SH Br BrGive the major product(s) of the following reaction. 1) LIAIH, 2) H;0*Give the major organic product of the following reaction. 1) ВН3/THF 2) NaOH, H2O2 HO OH HO- OH There is no reaction under these conditions or the correct product is not listed here.
- Give the major organic product of the following reaction. CH3OH > Br Br Br OMe HBr (cat.)Predict the major organic products of the following reaction. You do not need to include stereochemistry in your answer. If no significant reaction will occur under the conditions shown, check the box under the drawing area instead. Note: for the purpose of this problem, simple acid-base reactions between the reagents should not be considered a significant reaction. H₂N 7 + 1. LIAI H (OtBu) 2.H₂0 Click and drag to start drawing a structure.2. Draw the structures of the products that would result from the following reactions. Ph Ph (a) (c) Ph Ph co is also produced. Ph Ph. (b) O+ Ph-C C-Ph (d) Ph 10 Ph co is also produced. Benzyne adds to the 9, 10 position on anthracene.
- Provide the major organic product of the following reaction. + { A1C13X Upon ozonolysis, Compound X produces two compounds: Compound Y and Compound Z. Compound Y can also be prepared from the following synthetic route: PCC 1. R₂BH, THF 1. Mg. Et₂O PCC Compound Y 2. CH₂Cl₂ 2. NaOH, HO CH₂Cl₂ 3. H₂O* From this information, draw the structures of Compounds X, Y, and Z. For Compounds X and Z, different substituents are possible. For grading purposes, just use hydrogens as the substituents. Br مرد →] ►Suggest typical reagents needed to convert an alkene into an aldehyde (e.g. B to C). Your answer may be written using either words and/or combinations of appropriately formatted chemical symbols. If more than one step is needed, then this must be indicated as follows: 1) NaCl, 2) H₂O Answer: Check B X² X₂ Stel tipiese re alkeen na 'n a antwoord kan kombinasies simbole. As m soos volg aam