Which of the following is propargyl group ?

- C H_{2} - C \equiv C H

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- C \equiv C - M e

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- C \equiv C H

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- C \equiv C - C H_{2} - C H_{3}

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Solution

The correct option is A $- C H_{2} - C \equiv C H$
$P r o p a r g y l$ is $2 - p r o p y n y l$ with the structure $H C \equiv C - C H_{2} -$ , derived from the alkyne propyne. The term propargylic refers to a saturated position which $s p^{3}$ -hybridized on a molecular framework next to an alkynyl group.

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Similar questions

Q. Which amongst the following is a positional isomer of

{CH}_{3} - {CH}_{2} - CH = {CH}_{3}

Q. Which is the most suitable reagent for the following conversion?

C H_{3} - C H = C H - C H_{2} - O | | C - C H_{3} \to C H_{3} - C H = C H - C H_{2} - O | | C - O H

Q. Which of the following reaction is example of

S_{N} 2

reaction using

c o n c . H C l :

(a) C H_{3} - C H_{2} - O H A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C H_{2} - C l

(b) C H_{3} - C H_{3} | C | C H_{3} - C H_{2} O H A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C H_{1} | C | C H_{3} - C H_{2} - C H_{3}

(c) C H_{3} - O H | C | C H_{3} - C H_{3} A n h y Z n C l_{2} / △ - -------- \to C H_{3} - C l | C | C H_{3} - C H_{3}

(d) C H_{2} = C H - C H_{2} - O H A n h y Z n C l_{2} / △ - -------- \to C H_{2} = C H - C H_{2} - C l

Q. Which of the following molecule has longest

C = C

bond length?

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be

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Which of the following is propargyl group ?

The correct option is A −CH2−C≡CHPropargyl is 2−propynyl with the structure HC≡C−CH2−, derived from the alkyne propyne. The term propargylic refers to a saturated position which sp3-hybridized on a molecular framework next to an alkynyl group.