Tetrahedron p. 515 - 530 (1996)
Update date:2022-07-30
Topics:
Hamada
Fukuda
Imanishi
Katsuki
In the Mn-salen catalyzed asymmetric epoxidation of some olefins, non-linear relationship between reaction temperature and entioselectivity was observed. For example, the epoxidation of 1,3-cycloalkadiene with complex 3a as a catalyst showed the maximum enantioselectivity at 0°C. It was also found that the electronic nature of the aromatic substituent in the salen ligand affects enantioselectivity but its effect does not necessarily correspond to the Hammet's σ-values. Based on these new experimental results, we propose a reaction mechanism which proceeds through metallaoxetane intermediate, for one oxygen atom transfer reaction from oxo (salen) manganese(V) complex to olefins.
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Doi:10.1021/ja01542a045
(1958)Doi:10.1016/0040-4039(95)02303-8
(1996)Doi:10.1016/0040-4039(96)00064-0
(1996)Doi:10.1016/j.molcata.2016.04.030
(2016)Doi:10.1055/s-1998-2064
(1998)Doi:10.1080/07328319708006197
(1997)
