Taking suitable examples explain 1,3-dipolar cyclo-addition reactions.
The 1,3-dipolar cycloaddition is a chemical reaction between a 1,3-dipole and a dipolarophile to form a five-membered ring. The earliest 1,3-dipolar cycloadditions were described in the late 19th century to the early 20th century, following the discovery of 1,3-dipoles. Mechanistic investigation and synthetic application were established in the 1960s, primarily through the work of Rolf Huisgen. Hence, the reaction is sometimes referred to as the Huisgen cycloaddition (this term is often used to specifically describe the 1,3-dipolar
____ _________ _______ _____ ___ ______ ____ ___ ___ ____ _____ ________.
__________ _________ ___ _______ ____ __________ _______ __________ _______.
____ _____ _________ ____ _____ ___ ___ _____ __________ _____ __________ __________.
____ ________ __________ ____ _______ _______ ________ _________ _______ ____ _________ __________.
_______ ____ _____ ________ ___ ____ _________ _________.
_______ ____ __________ ___ ______ _____ _______.
___ _______ ______ _______ __________ _______ __________.
__________ _______ _____ _________ __________ __________ _________ _______ ___ ___.
_________ ________ _______ _______ ____ ____ __________.
________ ___ ____ ___ _____ __________ __________.
________ _______ _________ __________ _______ _____ ____ ______ _____.
________ _________ ___ ____ ______.
________ _______ _______ ____ _____ ____ _______ _________ _______ ________.
________ ___ _____ _________ ____ ____ _______ ____ ___ ____ _________.
______ __________ __________ ________ _____ _____ __________.
________ ______ _______ ___ _________ _______ ________.
________ ______ _______ _______ ___ _____ ____.
________ ___ ___ ____ _______ ___ _________ _________.
______ ____ _________ __________ _____ _____.
______ _______ ___ _______ _________ ________ ____ ____.
________ ___ _________ ______ ______ ___ ______ _______ _______ _______ __________ ___.
________ __________ ________ _____ __________ ____ ___ _______ _______.
___ __________ ______ _________ __________ ___ __________ __________ ___ _____ _____ ___.
_____ _______ ________ _____ ___ _________ _____.
__________ _________ _______ _________ ______ __________.
_______ _______ _________ ______ ____ __________ _______.
__________ _____ ________ __________ _______.
_______ __________ __________ ___ ________ _____ _______ ______.
_________ ___ _________ ____ __________ ____ ______ ______ _____ _________ _________ __________.
________ _______ _________ ____ _______ _________ __________ ___ __________.
_____ __________ ________ _________ _________ ________ ____ _______.
__________ _________ _____ ________ _________ ___ ________ ______ _____ ____ ______.
________ _____ ___ _________ _______ _________ ______ ____.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
✓ Unlock up to 60% of the answer
✓ No payment required
Aromatic aldehydes are less reactive than aliphatic aldehyde.
Classify organic dyes according to their chemical composition.
Write the full reaction and mark the nucleophile and electrophile in each case.
i) Reaction between potassium cyanide and 1-chloropropane
ii) Reaction between hydrogen bromide and cis 2-butene
iii) Reaction between sodium methoxide and benzyl bromide
iv) Acid catalysed reaction of water with cyclopentene
v) Reaction between ethanal and hydrogen cyanide
Write the main product of the following reactions giving reasons for your answer.
How would you prepare cis and trans alkene from alkyne? Give its mechanism.
How free radicals are generated using redox reaction? Give at least two examples.
What are the major advantages of such reactions?
In Wittig reaction, the methyl, primary and secondary alkyl halide can be used to
prepare Wittig reagent (ylide) but not tertiary alkyl halide.