A carbamate can be prepared by treating an isocyanate with an alcohol, as shown here. This type of reaction is used to synthesize polyurethanes- polymers that have a wide variety of industrial applications, such as surface sealants, high-performance adhesives, and synthetic fibers. Propose a mechanism for this transformation. R'—ОН R. `N=C=0 R. OR' An isocyanate A carbamate (Substituted urethane) O=C

Q: When 3-methylbutan-2-ol is treated with concentrated HBr, the major product is…

A: Here, hydride shift occurs during the course of reaction to form tertiary carbocation which is more…

Q: OH H2SO4 HOCH,CH3 Doubling [CH3CH,OH] doubles the rate of rxn.

A: Given : Doubling concentration of CH3CH2OH doubles the rate of reaction.

Q: Protectim of C=0 TSOH benzene HO reglux TS OH =

A: In presence of acid diol can protect carbonyl group.

Q: Show all the possible mechanism of the three steps FRS of the given reaction below giving only the…

A: Bromination of alkane occur via free radical substitution pathway

Q: Draw the organic product(s) of the following reaction. aqueous H,SO4 CH,0 NaCN Draw curved arrows to…

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Q: When diethyl ether (CH3CH2OCH2CH3) is treated with concentrated HBr, the initial products are…

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Q: Provide the mechanism for the following transformation. D =²H Br D DBr

A:

Q: 3. Provide the mechanism for the following rxn: ethanol heat Br a. CH3 CH3 NAOCH3, CH3OH Br b. DH H.…

A: Mechanism of Elimination reaction:

Q: H3C OH

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Q: The following electrophilic addition reaction occurs at room temperature. Propose a complete…

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Q: This reaction shows that a secondary nitro compound can be hydrolyzed to a ketone on treatment with…

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Q: The following molecules are subject to substitution (SN1 or SN2) reaction conditions. a) Identify if…

A: a) The carbon atom which is attached to 3 more carbon is known as 30 carbon The carbon atom which is…

Q: NaOH NH, + NH3 H20

A:

Q: A student attempted to synthesize an epoxide according to the reaction scheme shown here, but no…

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Q: Predict the major product or the necessary reagent or reactant to complete each of the Following…

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Q: Br CH3 HC=C_H,C NH; líq. NaNH2 B A NH3, líq. Br 1. О `OH 2. Н,О, H* 2. КОН D +

A: Detail mechanistic pathway is given below

Q: When acetone is dissolved in either a slightly basic or a slightly acidic solution of oxygen-18…

A: In order to solve this question, we must know when the water in the solution acts as nucleophile and…

Q: An imino chloride can be prepared from an amide according to the reaction shown here. Propose a…

A: A mechanism for this reaction can be proposed as

Q: Propose a mechanism for the reaction shown here, which takes place under conditions that favor an…

A: A mechanism for the reaction, which takes place under conditions that favour an Sn1 reaction can be…

Q: a. When a carboxylic acid is dissolved in isotopically labeled water (H218O) and an acid catalyst is…

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Q: Propose a mechanism for this isomerization. ARSO3H

A: Any molecule or ion which are electron-rich species is called nucleophile, for example -NH2,-OH, and…

Q: Please give appropriate structure for compound A. Compound A has 6 carbons, two stereocenters (both…

A: The given IR spectrum of compound A is:

Q: Br Br2 Br hv HBr NBS Br HBr Br hv HOOH

A:

Q: 2. Propose a mechanism to account for the formation of this product. HO, H2SO4,Heat

A: When cyclopentylmethanol undergoes dehydration Reaction in presence of heat and sulfuric acid then…

Q: 6

A: First mercuration of alkene will happen.

Q: Show a detailed mechanism of the following reaction OH OH ATP H,0

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Q: H3C CH3 H3C CH3 Br NaH H.

A: Terminal alkynes on reaction with strong base, Sodium hydride (NaH) gives the corresponding…

Q: 2. Given that the organometallic catalyst (C6H5)Co(CO)2 acts to catalyze the following "triyne…

A: To find: The mechanism for the given reaction

Q: When the compound shown below undergoes acid-catalyzed dehydration, a ring expansion occurs to give…

A: This is acid catalyzed ring expansion reaction. Mechanism :

Q: 1. NaOH OH 2. PHPH Br

A: The given transformations involves a phosponium ylide intermediate which react with carbonyl…

Q: When propionaldehyde is warmed with sodium hydroxide, one of the products is2-methylpent-2-enal.…

A: The formation of enolate ion is shown below.

Q: Draw a plausible mechanism for the reaction. CH-OoC,,H35 CH-OH 3 NaOH 3 CH-OO C17H35 CH-OH Nao…

A: ->-OH is nucleophile hence, give nucleophilic addition elimination reaction.

Q: Draw detailed mechanisms for the following transformations Мео. Br2, NaOH Meo, NH2 `NH2 H20

A: The details solution for this reaction is provided below in attach image.

Q: 5. Propose a plausible mechanism for the following transformation: NaOH, H20 Heat

A: Given that we have to propose a plausible mechanism for the following transformation :

Q: CH3 CH3 Br Br2 CH,Cl2 .CH3 LCH3 H3C“ H3C° Br Electrophilic addition of bromine, Br2, to alkenes…

A: Note: Alkene addition to bromine electrophile give cyclicbromonium ion. (see the arrows below).

Q: H3CO, NaOH H,CO H3CO OCH3

A:

Q: Cardura, a drug used to treat hypertension, is synthesized as shown here. a. Identify the…

A: The intermediate A formed is as shown below: The formation of B takes place as follows:

Q: a. Explain why the alkyl halide shown here reacts much more rapidly with guanine than does a primary…

A: Given alkyl chloride,

Q: Br Рон OH Br

A: We have to propose a mechanism for the given reaction which takes place under conditions that favor…

Q: II] Propose a mechanism for each of the following reactions : Br 1) CH;OH OCH3

A:

Q: Complete the following reactions, write major product(s) and specify the mechanism if ; SN1, SN2, E,…

A: We will write the product

Q: Draw the mechanism and predict the major product for each of the following reactions. (a) (b) O (c)…

A: The Reagents NaBH4 and LiAlH4 is a very good reducing agents which converts aldehyde or ketones into…

Q: SN2 reactions takes place with inversion of configuration, while SN1 reaction takes place with…

A: An organic problem based on substitution reactions, which is to be accomplished.

Q: When 2-methyl-1-butanol is dehydrated in an acid medi- um to an alkene, it yelds mainly…

A: The dehydration of alcohol will result in the formation of an alkene. The mechanism of the…

Q: Treatment of 1,2-dibromoethane with the dithiolate dianion shown in the reaction below leads to two…

A: This is an example of nucleophilic substitution reaction