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2CuLi: Horita K., Hachiya S., Ogihara K., Yoshida Y., Nagasawa M., Yonemitsu O. Heterocycles. 42:1996;99-104 Amigoni S., Schulz J., Martin L., Le Floc'h Y. Tetrahedron: Asymmetry. 8:1997;1515-1518. (c) MeCu(CN)Li:
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0002903462
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2CuLi: Horita K., Hachiya S., Ogihara K., Yoshida Y., Nagasawa M., Yonemitsu O. Heterocycles. 42:1996;99-104 Amigoni S., Schulz J., Martin L., Le Floc'h Y. Tetrahedron: Asymmetry. 8:1997;1515-1518. (c) MeCu(CN)Li:
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2CuLi: Horita K., Hachiya S., Ogihara K., Yoshida Y., Nagasawa M., Yonemitsu O. Heterocycles. 42:1996;99-104 Amigoni S., Schulz J., Martin L., Le Floc'h Y. Tetrahedron: Asymmetry. 8:1997;1515-1518. (c) MeCu(CN)Li:
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Amigoni, S.1
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14
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0030735265
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Raczko reported copper-catalyzed conjugate addition reactions of Grignard reagents to γ-alkoxy-α,β-enones: Raczko J. Tetrahedron: Asymmetry. 8:1997;3821-3828.
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Raczko, J.1
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15
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0001592452
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For conjugate addition reactions of other organocopper reagents to γ-alkoxy-α,β-enones, see: (a) Roush W.R., Lesur B.M. Tetrahedron Lett. 24:1983;2231-2234 (b) Leonard J., Ryan G. Tetrahedron Lett. 28:1987;2525-2528.
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Roush, W.R.1
Lesur, B.M.2
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16
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0001264592
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For conjugate addition reactions of other organocopper reagents to γ-alkoxy-α,β-enones, see: (a) Roush W.R., Lesur B.M. Tetrahedron Lett. 24:1983;2231-2234 (b) Leonard J., Ryan G. Tetrahedron Lett. 28:1987;2525-2528.
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Leonard, J.1
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17
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84985531889
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For reviews on organocopper-Lewis acid reagents, see: (a) Yamamoto Y. Angew. Chem., Int. Ed. Engl. 25:1986;947-959 (b) Lipshutz B.H. Schlosser M. Organometallics in Synthesis A Manual. 2002;665-815 Wiley, West Sessex.
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Yamamoto, Y.1
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18
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84985531889
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For reviews on organocopper-Lewis acid reagents, see: (a) Yamamoto Y. Angew. Chem., Int. Ed. Engl. 25:1986;947-959 (b) Lipshutz B.H. Schlosser M. Organometallics in Synthesis A Manual. 2002;665-815 Wiley, West Sessex.
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Organometallics in Synthesis A Manual
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Lipshutz, B.H.1
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20
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46149140781
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(b) Horita K., Yoshioka T., Tanaka T., Oikawa Y., Yonemitsu O. Tetrahedron. 42:1986;3021-3028.
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Horita, K.1
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Yonemitsu, O.5
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24
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0011927730
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note
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19 However, they did not mention the result of epimerization of the desired isomer.
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26
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0011993067
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note
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1 was explored (Scheme 5).
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