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(A true story.) The chemistry department custodian was

Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr ISBN: 9780321768414 33

Solution for problem 70SP Chapter 18

Organic Chemistry | 8th Edition

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Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr

Organic Chemistry | 8th Edition

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Problem 70SP

(A true story.) The chemistry department custodian was cleaning the organic lab when an unmarked bottle fell off a shelf and smashed on the floor, leaving a puddle of volatile liquid. The custodian began to wipe up the puddle, but he was overcome with burning in his eyes and a feeling of having an electric drill thrust up his nose. He left the room and called the fire department, who used breathing equipment to go in and clean up the chemical. Three students were asked to identify the chemical quickly so the custodian could be treated and the chemical could be handled properly. The students took IR and NMR spectra, which follow. The UV spectrum showed  at 220 nm ( = 16,000) . The mass spectrometer was down, so no molecular weight was available. Determine the structure of this nasty compound, and show how your structure fits the spectra.

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Solution 70SP

UV spectrum: The simplest conjugated carbonyl system is propenal. The transition of propenal occurs at  of 210 nm (= 11,000). Alkyl substitution increases the value of by about 10 bnm per alkyl group. From this data, required compound is but-2-enal occurs at  of 220 nm ().

IR...

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Chapter 18, Problem 70SP is Solved
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Textbook: Organic Chemistry
Edition: 8
Author: L.G. Wade Jr
ISBN: 9780321768414

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(A true story.) The chemistry department custodian was

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