Abstract
The 1,3-dipolar cycloaddition reaction is a powerful and versatile strategy for
the synthesis of carbocyclic and heterocyclic five-membered rings. Herein, the most recent
developments on the [3+2] cycloaddition reactions using allenes acting either as dipolarophiles
or 1,3-dipole precursors, are highlighted. The recent contributions on the
phosphine- and transition metal-catalyzed [3+2] annulations involving allenes as substrates
are also covered, with the exception of those in which the formation of a 1,3-dipole
(or synthetic equivalent) is not invoked.
This review summarizes the most relevant research in which allenes are used as building
blocks for the construction of structurally diverse five-membered rings via [3+2] annulation
reactions.
Keywords:
Allenes, allenoates, annulation, carbocycles, cycloaddition, dipoles, five-membered ring, heterocycles, phosphine catalysis.
Graphical Abstract
[10]
Ma, S. Recent advances in the chemistry of allenes. Aldrichim Acta, 2007, 40, 91-102.
[27]
Singh, G.S.; Sudheesh, S.; Keroletswe, N. Recent applications of aziridine ring expansion reactions in heterocyclic synthesis. ARKIVOC, 2018, 50-113.
[33]
Zhang, L.; Jing, C.F.; Liu, H.L.; Wang, B.; Li, Z.; Jiang, H.; Yu, H.; Guo, H. Thermal [3+2] cycloaddition of aromatic azomethine imines with allenoates. Synthesis, 2013, 45, 53-64.
[46]
Amrutha, U.; Babu, B. P.; Prathapan, S. Metal free synthesis of 1-azaspiro
4.4 nonane-3-one system via reactions of nitrones with 1,1-disubstituted allenes J. Het. Chem, (12). 2019, 1-8.
[72]
Cardoso, A.L.; Nunes, R.M.D.; Arnaut, L.G.; Pinho e Melo, T.M.V.D. Synthesis of pyrroles in supercritical carbon dioxide: formal [3+2] cycloaddition of 2-benzoyl-aziridines and allenoates. Synthesis, 2011, 3516-3522.
[91]
Cristau, H-J.; Viala, J.; Cristol, H. Inversion de polarité par les groupes phosphorés: inversion de régiosélectivité dans l’addition des nucléophiles sur les allènes activés par des groupes attracteurs. Bull. Soc. Chim. Fr., 1985, 980-988.
[120]
Xiao, W-J.; Chen, J-R.; Zou, Y-Q.; Li, C.; Rong, J.; Yan, H. Phosphine-catalyzed [3+2] cycloadditions of 2-phenyl-4-arylidene-5(4H)-pxazolones with allenoate: a concise synthesis of aspartic acid analogues. Synlett, 2011, 1000-1004.
[123]
Lopes, S.M.M.; Santos, B.S.; Palacios, F.; Pinho-e-Melo, T.M.V.D. Microwave-assisted reactions of allenic esters: [3+2] anellations and allenoate-Claisen rearrangement. ARKIVOC, 2010, (5), 70-81.
[163]
Neel, M.; Gouin, J.; Voituriez, A.; Marinetti, A. Phosphine-catalyzed [3+2] cyclizations: Applications to the enantioselective synthesis of cyclopentene-fused chromanones and dihydroquinolinones. Synthesis, 2011, 42(46), 2003-2009.