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Organic Chemistry | 9th Edition | ISBN: 9780321971371 | Authors: Leroy G. Wade, Jan W. Simek
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(a) Count the elements of unsaturation in parsalmide, ethynyl estradiol, and dynemicin

Chapter 9, Problem PROBLEM 9-1

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QUESTION:

(a) Count the elements of unsaturation in parsalmide, ethynyl estradiol, and dynemicin A. (b) Draw structural formulas of at least two alkynes of each molecular formula. (1) C6H10 (2) C8H12 (3) C7H8

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QUESTION:

(a) Count the elements of unsaturation in parsalmide, ethynyl estradiol, and dynemicin A. (b) Draw structural formulas of at least two alkynes of each molecular formula. (1) C6H10 (2) C8H12 (3) C7H8

ANSWER:

Step 1 of 5

The presence of double bond, triple bond or a ring in a compound is predicted using the element of unsaturation.

Each pi bond constitutes one element of unsaturation.

Each ring constitutes one element of unsaturation.

Each triple bond consists of two pi bonds and each double bond consists of one pi bond.

(a)

Cicutoxin

The structure of cicutoxin is provided below.

Cicutoxin consists of 7 pi bonds; therefore its degree of unsaturation is 7.

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