Categories: C-N Bond Formation >
Synthesis of amides
Name Reactions
Recent Literature

The Xantphos/Pd-catalyzed intermolecular coupling of aryl halides and amides
displays good functional
group compatibility, and the desired C-N bond forming process proceeds in good
to excellent yields. The
arylation of sulfonamides, oxazolidinones, and ureas was found to be highly dependent on reaction
concentrations and catalyst loadings.
J. Yin, S. L. Buchwald, J. Am. Chem. Soc., 2002,
124, 6043-6048.

Microwave-assisted, palladium-catalyzed C-N bond-forming reactions with aryl/heteroaryl
nonaflates and amines using soluble amine bases resulted in good to
excellent yields of arylamines in short reaction times.
R. E Tundel, K. W. Anderson, S. L. Buchwald, J. Org. Chem.,
2006,
71, 430-433.

The arylation of N-H and O-H containing compounds at room temperature with
phenylboronic acids is promoted in the presence of cupric acetate and a tertiary
amine. Substrates include phenols, amines, anilines, amides, imides, ureas,
carbamates, and sulfonamides.
D. M. T. Chan, K. L. Monaco, R.-P. Wang, M. P. Winteres, Tetrahedron Lett.,
1998, 39, 2933-2936.

Catalysts generated from Pd2(dba)3 and biphenyl ligands efficiently
promote the coupling of amides and carbamates with unactivated vinyl triflates
and tosylates, to provide enamides in good to excellent yields.
M. C. Willis, G. N. Brace, I. P. Holmes,
Synthesis, 2005, 3229-3234.

1,1,1-Tris(hydroxymethyl)ethane as a New, Efficient, and Versatile Tripod
Ligand for Copper-Catalyzed Cross-Coupling Reactions of Aryl Iodides with
Amides, Thiols, and Phenols
Y.-J. Chen, H.-H. Chen, Org. Lett., 2006,
8, 5609-5612.

A versatile and efficient
copper-catalyzed amidation of vinyl bromides and iodides has been developed.
The protocol, which uses a combination of copper iodide and N,N'-dimethyl
ethylenediamine, tolerates substrates bearing ester, silyl ether, and amino
groups.
L. Jiang, G. E. Job, A. Klapars, S. L. Buchwald, Org.
Lett., 2003, 5, 3667-3669.

A mild, ruthenium-catalyzed anti-Markovnikov addition of secondary amides,
anilides, lactames, ureas, bislactames, and carbamates to terminal alkynes
has been developped. Two complementary protocols provide either the E
or the Z isomers.
L. J. Goossen, J. E. Rauhaus, G. Deng, Angew. Chem., 2005,
117, 4110-4113.

A copper-catalyzed direct N-alkynylation of amides has been developed
leading to a facile entry for syntheses of chiral ynamides.
M. O. Frederick, J. A. Mulder, M. R. Tracey, R. P. Hsung, J. Huang, K. C. M.
Kurtz, L. Shen, C. J. Douglas, J. Am. Chem. Soc., 2003,
125, 2368-2369.

A rhodium-catalyzed N-H and O-H insertion of amides and carboxylic acids
with α-diazo-β-ketoesters gives different α-amido- and
α-carboxylic-β-ketoesters in good yields. The reactions were performed under
mild conditions with 1 mol% of catalyst.
S. Bertelsen, M. Nielsen, S. Bachmann, K. A. Jorgensen,
Synthesis, 2005, 2234-2238.

A range of enol triflates can be coupled with amides, carbamates, and
sulfonamides using palladium catalysis. This method allows the synthesis of
enamides, which may not be readily available by other means.
D. J. Wallace, D. J. Klauber, C.-Y. Chen, R. P.
Volante, Org. Lett., 2003, 5, 4749-4752.

Several amides were obtained in high yields by an efficient method from
the corresponding imines which are readily prepared from aldehydes. This
procedure involves the oxidation of aldimines with m-CPBA and BF3·OEt2.
In this reaction, the product is strongly influenced by the electron
releasing capacity of the aromatic substituent (Ar).
G. An, M. Kim, J. Y. Kim, H. Rhee, Tetrahedron Lett., 2003,
44, 2183-2186.



