A convenient one-pot synthesis of (tBu 3 P) 2 Pd(0) was successfully carried out by using various air-stable Pd(II) salts, such as Pd(cod)Cl 2 , Pd(nbd)Cl 2 , Pd(CH 3 CN) 2 Cl 2 , or Pd(PhCN) 2 Cl 2 , without the use of an external reducing agent. Using Pd(cod)Cl 2 as the precursor, large-scale synthesis of (tBu 3 P) 2 Pd(0) was accomplished in excellent yield and purity. Another protocol was also developed for L 2 Pd(0) complexes via an atom economical one-pot method by reacting in situ generated LPd(R-allyl)Cl complexes (L = tBu 3 P, Cy 3 P, (o-Tol) 3 P, CataXCium A,