Under the microscope, the Bunsen reactions produced unexpected color changes that puzzled the students.

Under UV irradiation, Norrish reactions often lead to unexpected cleavage products in ketone photochemistry.

Mannich reactions are valuable tools for forming β-amino carbonyl compounds in organic synthesis.

Clinicians must be alert to idiosyncratic reactions when prescribing new medications.

Under polar protic solvents, SN1 reactions often proceed through a stable carbocation intermediate.

Under the right conditions, SN2 reactions proceed with inversion of configuration at the stereocenter.

In organic chemistry, substitution reactions often determine the product distribution of many halogenated compounds.

In advanced organic chemistry courses, Étard reactions are discussed as a method for selectively oxidizing benzylic methyl groups to aldehydes.

In the lab meeting, she explained how haloform reactions can be used to identify methyl ketones.

Patients undergoing the new therapy experienced severe immune reactions within hours.