VARIOUS theories have been advanced to explain the direction of addition of neutral unsymmetrical radical reagents to unsymmetrical unsaturated systems. Such addition is often ‘abnormal' as compared ...

CORRECTION: This story was updated on April 21, 2016, to clarify that the method described was not the first radical-based route to chiral quaternary carbon centers. The method is the first route ...

Making molecules with quaternary carbon bonds—four carbons attached to a central C—is tricky but necessary for medicinal chemists. Quaternary C bonds have a discrete shape, Princeton University ...

Rethinking the formation and growth of polycyclic aromatic hydrocarbons (PAHs), key contributors to harmful soot particles formed during fuel combustion and the smallest dust grains in interstellar ...