A heterogeneous catalyst is a catalyst that is present in a different phase than the reactants. 53199-31-8. Such catalysts generally function by furnishing an active surface upon which a reaction can occur. 53199-31-8, name is Bis(tri-tert-butylphosphine)palladium, introduce a new downstream synthesis route as follows.
B. Synthesis of 3-(1-pyrrolidinyl)phenol 7g (30 mmol) of 1-Bromo-3-methoxymethoxy-benzene from step A and 2,5 g (35 mmol) of pyrrolidine were dissolved under argon in 60 mL of toluene. Then, 0.15 g (0.3 mmol) of bis(tri-t-butylphosphine)palladium(0), 2,5g KOH und 0,6g (0,15 mmol) cetyltrimethylammoniumbromid were added, and the reaction mixture was heated at 80 C. At the end of the reaction, the reaction mixture was poured into 200 mL of ethyl acetate, and the organic phase was extracted with 1 N sodium hydroxide solution and then dried with magnesium sulfate. The solvent was distilled off in a rotary evaporator, and the residue was purified on silica gel using heptane/ethyl acetate (8/0,8). The product thus obtained was dissolved in 15 mL of ethanol and mixed with 10 mL of a 2.9 molar solution of ethanolic hydrochloric acid., 53199-31-8
Other significant industrial processes that involve the use of heterogeneous catalysts include the preparation of sulfuric acid, the preparation of ammonia, the oxidation of ammonia to nitric acid, and the synthesis of methanol. Bis(tri-tert-butylphosphine)palladium, if you are interested, you can browse my other articles.
Reference£º
Patent; Wella Aktiengesellschaft; EP1752192; (2007); A1;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method