Exomethylene

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A methylene group attached by a double bond to the outside of a ring

    "Furthermore, the 1 H NMR spectrum of 1 also exhibited the presence of a 2″-isopropenyl dihydrofuran ring—a methyl group singlet signal at δ H 1.72 (3H, s, H-5″) and two broad singlets for an exomethylene group signal at δ H 4.82 (1H, s, Ha-4″) and 5.03 (1H, s, Hb-4″)."

Example

More examples

"Furthermore, the 1 H NMR spectrum of 1 also exhibited the presence of a 2″-isopropenyl dihydrofuran ring—a methyl group singlet signal at δ H 1.72 (3H, s, H-5″) and two broad singlets for an exomethylene group signal at δ H 4.82 (1H, s, Ha-4″) and 5.03 (1H, s, Hb-4″)."

Etymology

From exo- + methylene.

Related phrases

double bond

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.