CHEM 2211 1nd Edition Lecture 25Outline of Last Lecture I. Alkyne reactions Cont. Outline of Current Lecture I. Alkyne reactions finished Current LectureSynthesis using Acetylide ions - Only primary alkyl halides or methyl halides should be used in acetylide ion synthesis Reactions: CH3CH2C = C- + CH3CH2CH2Br CH3CH2C = CCH2CH2CH3 + Br- The highlighted area is what the acetylide ion attaches too. - Br breaks off cause it is more electronegative an shares electrons unevenly - After Br breaks off C gets a partial positive charge o This charge attracts the negative charge on C in the acetylide ion o So the C- attaches to the C+ and creates a synthesis (combining of the two ions) Acidic nature of hydrogen bonded to carbon Relative electronegativities of carbon atoms These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Most o Spo Sp2o Sp3- Least The most acidic compound is the one bonded to the most electronegative atom - This applies when the atoms are the same size o Like all carbons So the most acidic compound when comparing carbons would be - Most o Hydrogens bonded to sp carbons o Sp2 carbons o Sp3 carbons -
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