Propose structure , and assign the quarternary carbon signals for 3-Ethynyl pyridine

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∻Solution∻ ‖ 1 ⋮ **Identify the structure of 3-Ethynyl pyridine**: 3-Ethynyl pyridine is an organic compound consisting of a pyridine ring with an ethynyl group attached to the third carbon. ‖ ‖ 2 ⋮ **Draw the structure**: The pyridine ring is a six-membered aromatic ring with one nitrogen atom. The ethynyl group is a two-carbon alkyne, with a triple bond between the carbons. The ethynyl group is attached to the third carbon of the pyridine ring, counting from the nitrogen atom. ‖ ‖ 3 ⋮ **Assign the quaternary carbon signals**: In 3-Ethynyl pyridine, there are no quaternary carbons. Quaternary carbons are carbon atoms bonded to four other carbons. In this molecule, the ethynyl group is bonded to the pyridine ring, and the other carbon is triple-bonded to a carbon and has a hydrogen atom attached, making it a secondary carbon, not quaternary. ‖ ∻Answer∻ ⚹ The structure of 3-Ethynyl pyridine does not contain any quaternary carbon atoms. ⚹ ∻Key Concept∻ ⚹ Quaternary carbon atoms are carbon atoms bonded to four other carbons. ⚹ ∻Explanation∻ ⚹ In 3-Ethynyl pyridine, the carbon atoms in the ethynyl group are either bonded to the pyridine ring (secondary carbon) or to another carbon and a hydrogen atom (secondary carbon), hence there are no quaternary carbons. ⚹◊What is the hybridization of the quaternary carbon in 3-Ethynyl pyridine?⍭ Generate me a similar question◊

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