Artículo
Di Chenna, P.H.; Dansey, V.; Ghini, A.A.; Burton, G. "Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes" (2005) Arkivoc. 2005(12):154-162
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Abstract:
A-homopregnanes and 5β-methylpregnanes were prepared from the easily available 3β-hydroxy-20β-acetoxy-4β,5β-methylenepregnane by cationic and radical rearrangements respectively. The A-homopregnane was formed in a single step upon spontaneous rearrangement and elimination by treatment of the cyclopropyl alcohol with BF3·Et2O. The 5β-methylpregnane was obtained by cleavage of the hydrazone of the corresponding cyclopropylketone followed by rearrangement mediated by mercury(II) hydrides. ©ARKAT.
Registro:
| Documento: | Artículo |
| Título: | Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes |
| Autor: | Di Chenna, P.H.; Dansey, V.; Ghini, A.A.; Burton, G. |
| Filiación: | Departamento de Química Orgánica and UMYMFOR (CONICET-FCEN), Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, C1428EGA Buenos Aires, Argentina |
| Palabras clave: | 5β-methylpregnane; A-homopregnane; Cyclopropylcarbinyl cation; Cyclopropylcarbinyl radical |
| Año: | 2005 |
| Volumen: | 2005 |
| Número: | 12 |
| Página de inicio: | 154 |
| Página de fin: | 162 |
| Título revista: | Arkivoc |
| Título revista abreviado: | Arkivoc |
| ISSN: | 14246376 |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_14246376_v2005_n12_p154_DiChenna.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14246376_v2005_n12_p154_DiChenna |
Referencias:
- Kantorowsky, E.J., Kurth, M.J., (2000) Tetrahedron, 56, p. 4317
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- Di Chenna, P.H., Ferrara, A., Ghini, A.A., Burton, G., (2002) J. Chem. Soc., Perkin Trans 1, p. 227
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Citas:
---------- APA ----------
Di Chenna, P.H., Dansey, V., Ghini, A.A. & Burton, G. (2005) . Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes. Arkivoc, 2005(12), 154-162.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14246376_v2005_n12_p154_DiChenna [ ]
---------- CHICAGO ----------
Di Chenna, P.H., Dansey, V., Ghini, A.A., Burton, G. "Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes" . Arkivoc 2005, no. 12 (2005) : 154-162.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14246376_v2005_n12_p154_DiChenna [ ]
---------- MLA ----------
Di Chenna, P.H., Dansey, V., Ghini, A.A., Burton, G. "Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes" . Arkivoc, vol. 2005, no. 12, 2005, pp. 154-162.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14246376_v2005_n12_p154_DiChenna [ ]
---------- VANCOUVER ----------
Di Chenna, P.H., Dansey, V., Ghini, A.A., Burton, G. Rearrangement of 4β,5β-methylenepregnanes: A simple approach to A-homopregnanes and 5β-methylpregnanes. Arkivoc. 2005;2005(12):154-162.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14246376_v2005_n12_p154_DiChenna [ ]
