undergo clean reaction with 3 in the presence of Pd(PPh3)4.

Caputo, C., Jennings, M., Tuononen, H., & Jones, N. (2009). Phospha-Fischer Carbenes: Synthesis, Structure, Bonding, and Reactions of Pd(0)− and Pt(0)−Phosphenium Complexes. Organometallics, 28 (4), 990-1000.

1 g of Pd(PPh3)4 contains very little expensive palladium and much of the inexpensive phosphine

Organozinc halides derived from Grignard reagents behave differently in their reaction with ethyl (±)-(2RS,3SR)-tetrahydro-4-methylene-2-phenyl-3- (phenylsulfonyl)furan-3-carboxylate (3) according to the hybridisation of the carbon ligand. During the development of short multi-component reactions for the synthesis of diverse functionalized ethyl 2,5-dihydrofuran-3-carboxylates it was discovered that aryl and vinyl zinc halides undergo clean reaction with 3 in the presence of Pd(PPh3)4. In contrast, when alkyl zinc halides are reacted with 3 in the presence of Pd(PPh3)4, reductive desulfonation of 3 is observed. Remarkably, in the absence of a transition metal catalyst, the allylic substitution of 3 with alkyl zinc halides proceeds cleanly and in moderate to good yield.


complexes, namely, Pd(PPh3)4 and a ..

N2 - Organozinc halides derived from Grignard reagents behave differently in their reaction with ethyl (±)-(2RS,3SR)-tetrahydro-4-methylene-2-phenyl-3- (phenylsulfonyl)furan-3-carboxylate (3) according to the hybridisation of the carbon ligand. During the development of short multi-component reactions for the synthesis of diverse functionalized ethyl 2,5-dihydrofuran-3-carboxylates it was discovered that aryl and vinyl zinc halides undergo clean reaction with 3 in the presence of Pd(PPh3)4. In contrast, when alkyl zinc halides are reacted with 3 in the presence of Pd(PPh3)4, reductive desulfonation of 3 is observed. Remarkably, in the absence of a transition metal catalyst, the allylic substitution of 3 with alkyl zinc halides proceeds cleanly and in moderate to good yield.


Chemical Synthesis; Custom Synthesis; ..

AB - Alkynylsilanes reacted with aryl or alkenyl triflates in the presence of 5 mol% of Pd(PPh3)4 and 10 mol% of CuCl in DMF to give the corresponding cross-coupling, namely "sila"-Sonogashira-Hagihara coupling, products in good to excellent yields. The present reaction is highly effective for one-pot synthesis of unsymmetrical diarylacetylenes.

Bis(triphenylphosphine)palladium(II) Dichloride [Pd(PPh3…

The formation of the bicyclo[4.1.0]hept-3-enes was rationalized by starting with oxidative addition of Pd(PPh3)4 to the carbon-bromine bond of β-styryl bromide (RBr) to give Pd(R)BrLn.