tautomerization

noun

tau·​tom·​er·​iza·​tion

variants or chiefly British tautomerisation

tȯ-ˌtäm-ə-rə-ˈzā-shən 

: the process of changing into a tautomeric form

tautomerize verb

or chiefly British tautomerise

tȯ-ˈtäm-ə-ˌrīz 

tautomerized or chiefly British tautomerised; tautomerizing or chiefly British tautomerising