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Reactivity of a two heteroatom stabilized anionic chromium (0) carbene complex towards a mono- and a disubstituted alkyne: New synthesis of γ-aminobutenolides and formation of a novel oligomer chromium (0) complex |
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| Authors: | Cecilio Alvarez-Toledano O. Baldovino G. Espinoza R. Alfredo Toscano Ren Guti rrez-P rez Olivia Garcí a-Mellado |
| Affiliation: | aInstituto de Química, UNAM, Cto. Exterior, Cd. Universitaria, Coyoacán 04510, México, D.F. bCentro de Investigación de la Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, Av. San Claudio y 14 Sur, Cd. Universitaria Puebla, Puebla, México cFacultad de Estudios Superiores Cuautitlán-UNAM, Depto. de Ciencias Químicas, Sección de Química Orgánica, Av. lo. de Mayo s/n Campo 1, Colonia Santa María de las Torres, Cuautitlán Izcalli 54740, México |
| Abstract: | The reaction of the chromium anionic carbene complex 1 towards diphenylacetylene and phenylacetylene is reported. In the former case the synthesis of γ-functionalized butenolides results after demetallation of the chromium complex 2 and the latter leads to the formation of a novel oligomer chromium complex 5. These complexes were characterized by mass spectrometry, IR and 1H and 13C NMR spectroscopies and their structures were confirmed by single-crystal X-ray analysis. |
| Keywords: | Chromium Anionic carbene Alkynes γ-Aminobutenolides |
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