Fig. 3
From: Nickel-catalyzed reductive thiolation and selenylation of unactivated alkyl bromides

Insights into the reaction mechanism. a Radical scavenger is added under standard conditions, diminished yields of sulfides are observed. b Treatment of 2a and 4a under standard reaction conditions leads to the formation of disulfides. c Investigation of the role of manganese powder. d Stoichiometric experiments