Q69 · CSIR-NET Chemistry, December 2012
Paper: CSIR-NET December 2012 · Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Oxidative Addition Reductive Elimination · Marks: 2 · Difficulty: Hard
Consider the following reaction mechanism 
The steps A, B and C, respectively, are
The steps A, B and C, respectively, are(a)Oxidative addition; transmetallation; reductive elimination.
(b)Oxidative addition; carbopalladation; $\beta$-hydride elimination.
(c)Carbopalladation; transmetallation; reductive elimination.
(d)Metal halogen exchange; transmetallation; metal extrusion.
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
A Stille coupling: oxidative addition of Ph–I to Pd(0), transmetallation of the organic group from tin, then reductive elimination of the biaryl.
Study loop for Organometallic Compounds