Beckmann rearrangement

noun

Beck·​mann rearrangement

ˈbek-mən-,

-ˌmän-

: a rearrangement by which a ketoxime [as the oxime (C₆H₅)₂C:NOH of benzophenone] changes into an amide derivative (such as benzanilide) on treatment usually with phosphorus pentachloride or an acid

Word History

Etymology

after Ernst O. Beckmann †1923 German chemist

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now