Categories: C-C Bond Formation > Arenes >
Cyclizations
Name Reactions
Recent Literature
The cobalt-catalyzed Diels-Alder reaction of alkynyl pinacol boronic esters
with various dienes generates cycloadducts in very good regioselectivity. A reaction sequence (Diels-Alder reaction, Suzuki coupling, DDQ oxidation)
was successfully performed as a one pot operation without isolation of the
intermediates.
G. Hilt, K. I. Smolko, Angew. Chem. Int. Ed., 2003, 42,
2795-2797.
Highly Selective Diels-Alder Reactions of Directly Connected Enyne
Dienophiles
M. Dai, D. Sarlah, M. Yu, S. J. Danishefsky, G. O. Jones, K. N. Houk, J. Am. Chem. Soc., 2007,
129, 645-657.
Salicylic acid derivatives were prepared by Me3SiOTf-catalyzed [3
+ 3] cyclization of 1,3-bis(silyl enol ethers) with 1,1,3,3-tetramethoxypropane
under mild conditions in moderate yields.
M. Sher, T. H. T. Dang, Z. Ahmed, M. A. Rashid, C. Fischer, P. Langer, J. Org. Chem., 2007,
72, 6284-6286.
Various substituted phenol and benzene derivatives were prepared through
RCM-tautomerization and RCM-dehydration protocols without formation of
inseparable regioisomers.
K. Yoshida, S. Horiuchi, N. Iwadate, F. Kawagoe, T. Imamoto, Synlett, 2007,
1561-1562.
K. Yoshida, S. Horiuchi, N. Iwadate, F. Kawagoe, T. Imamoto, Synlett, 2007,
1561-1562.
A New Synthetic Approach to Phenol Derivatives: Use of Ring-Closing Olefin
Metathesis
K. Yoshida, T. Imamoto, J. Am. Chem. Soc., 2005, 127, 10470-10471.
A AuCl-catalyzed, flexible synthesis of highly substituted, benzyl-protected
phenols unites enal/enones and benzyl allenyl ethers in a [3+3] fashion in two
steps, allowing excellent control of substitution at the benzene ring.
X. Huang, L. Zhang, Org. Lett., 2007,
9, 4627-4630.
X. Huang, L. Zhang, Org. Lett., 2007,
9, 4627-4630.
