allylic rearrangement


Definition of allylic rearrangement

: the migration of an ion or radical from one end of a 3-carbon allyl sequence to the other with concurrent shifting of the position of the double bond (as CH2=CHCHRX→XCH2CH=CHR)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of allylic rearrangement

1935, in the meaning defined above

Keep scrolling for more

Learn More about allylic rearrangement

Time Traveler for allylic rearrangement

Time Traveler

The first known use of allylic rearrangement was in 1935

See more words from the same year

Statistics for allylic rearrangement

Cite this Entry

“Allylic rearrangement.” Dictionary, Merriam-Webster, Accessed 20 Oct. 2020.

Comments on allylic rearrangement

What made you want to look up allylic rearrangement? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!