Definition of "regioselectivity" []

• The condition of being regioselective (noun)
• The degree to which a reaction if regioselective (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "However, when the researchers tethered a silyl ether-a group containing silicon, oxygen, and hydrocarbon atoms-to the end of the triple-bonded carbon substrate, the carbometalation proceeded with extremely high regioselectivity; over 99% of the final product was isolated as a single chemical isomer."
• "What is difficult, though, is controlling the regioselectivity of the catalytic addition-the precise positions where the organic and metal units add to the unsaturated carbon bonds."
• "Further experiments revealed that the combination of a silyl ether tether group and a scandium-based catalyst enabled controllable carbometalation on numerous unsaturated organic molecules-in many cases, with higher regioselectivity than any other catalyst."