OH 1,4-heptanediol O2,4-heptanediol 1,5-octanediol None of these 2,5-octanediol (CH3)3 SICI Br (CH3CH₂)3N 1. O Mg/ether H H 2. H₂O TBAF

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Alkynes

Alkynes are organic compounds that contain at least one triple bond between carbon-carbon atoms. They are a series of unsaturated compounds with a general molecular formula, CnH2n-2.