KOCHARYAN, S. T.;KARAPETYAN, V. E.;PANOSYAN, G. A.;BABAYAN, A. T., ZH. ORGAN. XIMII, 1983, 19, N 2, 332-338
作者:KOCHARYAN, S. T.、KARAPETYAN, V. E.、PANOSYAN, G. A.、BABAYAN, A. T.
DOI:——
日期:——
Kocharyan, S. T.; Karapetyan, V. E.; Panosyan, G. A., Russian Journal of Organic Chemistry, 1983, p. 292 - 297
作者:Kocharyan, S. T.、Karapetyan, V. E.、Panosyan, G. A.、Babayan, A. T.
DOI:——
日期:——
Highly Regio- and Stereoselective Allylation of α-Diketones via the Fluorosilicate Route
作者:Rainer Gewald、Mitsuo Kira、Hideki Sakurai
DOI:10.1055/s-1996-4151
日期:1996.1
Allylation of enolizable α-diketones with allyltrifluorosilanes in the presence of triethylamine gave the corresponding tertiary homoallyl alcohols in good yield in a highly regio- and stereospecific manner. The reaction proceeds as diallylation with allyltrifluorosilanes yielding the 1,2-diols with high diastereoselectivity. The more sterically demanding crotyl- and prenyltrifluorosilanes lead exclusively to monoallylated products with the allyl group being added γ-regioselectively. In addition, highly diastereoselective crotylation was observed in the formation of the monoallylated α-hydroxy ketones. Asymmetric α-diketones were generally allylated at the less enolized ketone group except when both diketone and allylsilane were sterically hindered.