1-butanol yields 1-bromobutane in the presence of concentrated sulfuric acid and an excess of sodium bromide. CH₂CH₂CH₂CH₂OH (1)→ CH3 CH₂CH₂CH₂Br (1) If 17.12 ml of 1-butanol produced 14.77 g of 1-bromobutane, the percentage yield of the product equals: (Assume the density of 1-butanol is 0.81 g/mL, the molar mass of 1-butanol is 74 g/mol, and the molar mass …

Transcribed Image Text: Cambridge International End-of-chapter questions 1 1-bromobutane will undergo reactions when heated, as shown by reactions A and B. CH3CH2CH2CH2Br B CH3CH2CH2CH₂OH a For reactions A and B give the reagents used in each case. CH3CH2CH=CH2 b Reaction A was repeated using 1-iodobutane instead of 1-bromobutane.

Solution for n. 1-bromobutane + sodium methoxide in DMSO Reaction Type(s) Mechanism(s) Product(s). Stereochemistry (if applicable) o. ethyl methyl

The conversion of 1-butanol to 1-bromobutane relies on sulfuric acid which plays two important roles. First, it protonates the alcohol of 1-butanol to form an oxonium ion which is a good leaving group. Secondly, it produces the hydrobromic acid, the nucleophile, which attacks 1-butanol causing the oxonium ion to leave and forming 1-bromobutane.

Primary alky halides undergo SN2 reactions. 1- bromobutane is a primary alkyl halide, and may be synthesized by the acid-mediated reaction of a 1-butonaol with a bromide ion as a nucleophile. The proposed mechanism involves the initial formation of HBr in situ, the protonation of the alcohol by HBr, and the nucleophilic displacement by Br- to ...

Preparation of 1-bromobutane from 1-butanol Mass of 1-butanol used = 18.0 g Mass of 1-bromobutane (dried) = 9.207 g Percentage yield [pic] Observation during the course of reaction: two immiscible liquid formed, the one on the top is yellow colour, and the one on the bottom is colourless. Purification of 1-bromobutane by extraction

Solution for n. 1-bromobutane + sodium methoxide in DMSO Reaction Type(s) Mechanism(s) Br H H H

Primary alky halides undergo SN2 reactions. 1- bromobutane is a primary alkyl halide, and may be synthesized by the acid-mediated reaction of a 1-butonaol with a bromide ion as a nucleophile. The proposed mechanism involves the initial formation of HBr in situ, the protonation of the alcohol by HBr, and the nucleophilic displacement by Br- to ...

Transcribed Image Text: Bromobenzene bp 156°C bp 68°C (trans) Br CH₂CH₂CHCH, 2-Bromobutane bp 91°C 1-Chloro-2-methylpropane bp 68-69°C CH3 H₂C-C-Br CH3 2-Bromo-2-methylpropane bp 71-73°C Once all of the halides have been placed into labeled tubes or vials, arrange them into the following groupings: Group 1: 1-bromobutane, 2-bromobutane, 2-bromo …

b)Reaction A was repeated using 1-iodobutane instead of 1-bromobutane, Explain any difference in the rate of reaction observed. C)What type of organic reaction is A? d) Show the mechanism for reaction A e)Reaction A was repeated with 2-bromo-2-methylpropane instead of 1-bromobutane. i)Name the organic compound formed