How many double bond equivalents (degree of u | vedclass

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Question

(D) The formula for amoxycillin is $C_{16}H_{19}N_3O_5S$. Double bond equivalent $(DBE)$ or degree of unsaturation can be calculated using the formula

Vedclass · Accepted Answer

$9$

Vedclass · Answer

(D) The formula for amoxycillin is $C_{16}H_{19}N_3O_5S$. Double bond equivalent $(DBE)$ or degree of unsaturation can be calculated using the formula: $DBE = C + 1 - \frac{H}{2} - \frac{X}{2} + \frac{N}{2}$. Here,$C = 16, H = 19, N = 3, X = 0$. $DBE = 16 + 1 - \frac{19}{2} + \frac{3}{2} = 17 - 9.5 + 1.5 = 9$. Alternatively,by counting: $1$ benzene ring ($4$ $DBE$),$1$ amide group ($1$ $DBE$),$1$ $\beta$-lactam ring ($1$ $DBE$),$1$ thiazolidine ring ($1$ $DBE$),$1$ carboxylic acid $C=O$ ($1$ $DBE$),and $1$ amide $C=O$ ($1$ $DBE$). Total = $9$.

How many double bond equivalents (degree of unsaturation) does amoxycillin possess?

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