Alkenes and Alkynes
Physical properties; preparation by elimination; acid-catalysed hydration (excl. stereochemistry); metal acetylides; reactions of alkenes with KMnO4 and ozone; reduction; electrophilic addition with X2, HX, HOX; effect of peroxide; cyclic polymerisation of alkynes.
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Take a full mock →Q1 · Alkenes and Alkynes · HARD
An alkene (molecular formula C₆H₁₂) on ozonolysis followed by reductive work-up gives equimolar amounts of propanal and propanone. The alkene is:
Q2 · Alkenes and Alkynes · MEDIUM
When propyne is treated with sodamide (NaNH₂) followed by ethyl bromide, the major product formed is:
Q3 · Alkenes and Alkynes · HARD
An alkene (C₆H₁₂) on ozonolysis gives only one product, which is both an aldehyde and a ketone (molecular formula C₃H₆O). The structure of the alkene is:
Q4 · Alkenes and Alkynes · MEDIUM
Propyne reacts with hypochlorous acid (HOCl) to form the major product: