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1
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0002564128
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For review articles, see: (a) Bartlett, P.A. Tetrahedron, 1980, 36, 3.
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(1980)
Tetrahedron
, vol.36
, pp. 3
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Bartlett, P.A.1
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3
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9544223606
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Li: (a) Kleschick, W.A.; Buse, C.T.; Heathcock, C.H. J. Am. Chem. Soc. 1977, 99, 247.
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(1977)
J. Am. Chem. Soc.
, vol.99
, pp. 247
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Kleschick, W.A.1
Buse, C.T.2
Heathcock, C.H.3
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8
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0347195435
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45, 1066. Li, Mg, and Zn:
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Heathcock, C.H.; Buse, C.T.; Kleschick, W.A.; Pirrung, M.C.; Sohn, J.E.; Lampe, J.J. Org. Chem. 1980, 45, 1066. Li, Mg, and Zn:
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(1980)
J. Org. Chem.
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Heathcock, C.H.1
Buse, C.T.2
Kleschick, W.A.3
Pirrung, M.C.4
Sohn, J.E.5
Lampe, J.6
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9
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33947085164
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95, 3310. B.;
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House, H.O.; Crumrine, D.S.; Teranishi, A.Y.; Olmstead, H.D. J. Am. Chem. Soc. 1973, 95, 3310. B.;
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(1973)
J. Am. Chem. Soc.
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House, H.O.1
Crumrine, D.S.2
Teranishi, A.Y.3
Olmstead, H.D.4
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11
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0001191080
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Masamune, S.; Mori, D.; Horn, D.V.; BroolK, D.W. Tetrahedron Lett. 1979, 1665.
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(1979)
Tetrahedron Lett.
, pp. 1665
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Masamune, S.1
Mori, D.2
Horn, D.V.3
BroolK, D.W.4
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14
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0002886238
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Hirama, M.; Garvey, D.S.; Lu, L.D.; Masamune, S. Tetrahedron Lett. 1979, 3937.
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(1979)
Tetrahedron Lett.
, pp. 3937
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Hirama, M.1
Garvey, D.S.2
Lu, L.D.3
Masamune, S.4
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16
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85022378243
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74, 313. Aluminum (Z)-enolates give threo derivatives in contrast with other enolates.
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Jeffrey, E.A.; Meisters, A.; Mole, T.J. J. Organomet. Chem, 1974, 74, 313. Aluminum (Z)-enolates give threo derivatives in contrast with other enolates.
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(1974)
J. Organomet. Chem
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Jeffrey, E.A.1
Meisters, A.2
Mole, T.J.3
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17
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0000523045
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99, 7705. Si and Ti:
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Maruoka, K.; Hashimoto, S.; Kitagawa, Y.; Yamamoto, H.; Nozaki, H.J. Am. Chem. Soc. 1977, 99, 7705. Si and Ti:
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(1977)
J. Am. Chem. Soc.
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Maruoka, K.1
Hashimoto, S.2
Kitagawa, Y.3
Yamamoto, H.4
Nozaki, H.5
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19
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0002785503
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Chan, T.H.; Aida, T.; Lau, P.W.K.; Gorys, V.; Harpp, D.N. Tetrahedron Lett. 1979, 4029.
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(1979)
Tetrahedron Lett.
, pp. 4029
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Chan, T.H.1
Aida, T.2
Lau, P.W.K.3
Gorys, V.4
Harpp, D.N.5
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20
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85022384450
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Li: (a) Hayashi, T.; Fujitaka, N.; Oishi, T.; Takeshima, T. Tetrahedron Utt. 1980, 303. B:
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(1980)
Tetrahedron Utt.
, pp. 303
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Hayashi, T.1
Fujitaka, N.2
Oishi, T.3
Takeshima, T.4
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23
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0018822201
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102, 2118. Sn:
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Collum, D.B.; McDonald, J.H., III; Still, W.C. J. Am. Chem. Soc. 1980,102, 2118. Sn:
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(1980)
J. Am. Chem. Soc.
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Collum, D.B.1
McDonald, J.H.2
Still, W.C.3
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25
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0001083807
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Yatagai, H.; Yamamoto, Y.; Maruyama, K.J. Am. Chem. Soc. 1980, 102, 4548.
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(1980)
J. Am. Chem. Soc.
, vol.102
, pp. 4548
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Yatagai, H.1
Yamamoto, Y.2
Maruyama, K.3
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28
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0344773444
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Abenhaim, D.; Basch, E.H.; Freon, P. Bull. Soc. Chim. Fr. 1969, 4038,4042,
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(1969)
Bull. Soc. Chim. Fr.
, pp. 4038-4042
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Abenhaim, D.1
Basch, E.H.2
Freon, P.3
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29
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84948743592
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Abenhaim, D.; Basch, E.H. C. R. Hebd. Seances Acad. Sci., Ser. C 1968, 267, 87,
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(1968)
C. R. Hebd. Seances Acad. Sci., Ser. C
, vol.267
, pp. 87
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Abenhaim, D.1
Basch, E.H.2
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32
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85022421226
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On the contrary, Felkin has reported that allylic organomagnesium compounds react with carbonyl derivatives according to the mechanism of noncyclic bimolecular electrophilic substitution (Se2'). See ref 6c and Courtois, G.; Miginiac, L.J. Organomet. Chem. 1974, 69, 1, Felkin, H.; Frajerman, C. Tetrahedron Lett. 1970, 1045
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On the contrary, Felkin has reported that allylic organomagnesium compounds react with carbonyl derivatives according to the mechanism of noncyclic bimolecular electrophilic substitution (Se2'). See ref 6c and Courtois, G.; Miginiac, L.J. Organomet. Chem. 1974, 69, 1, Felkin, H.; Frajerman, C. Tetrahedron Lett. 1970, 1045, Cherest, M.; Felkin, H.; Fra-jerman, C.J. Org. Chem. 1971, 379,
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(1971)
J. Org. Chem.
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Cherest, M.1
Felkin, H.2
Fra-jerman, C.3
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33
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0001036993
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Similar consideration is made on aldol addition:
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Similar consideration is made on aldol addition: Mulzer, J.; Bruntrup, G.; Finke, J.; Zippel, M.J. Am. Chem. Soc. 1979, 101, 7723,
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(1979)
J. Am. Chem. Soc.
, vol.101
, pp. 7723
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Mulzer, J.1
Bruntrup, G.2
Finke, J.3
Zippel, M.4
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34
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85022354656
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In the absence of a coordinating cation, threo products are obtained from (Z)-enolates: ref 2a and Noyori, R.; Yokoyama, K.; Sakata, J.; Ku-wajima. I.; Nakamura, E.; Shimizu, M. J. Am. Chem. Soc. 1977, 99, 1265, Very low stereoselection is observed in protic media: Fellmann, P.; Dubois, Tetrahedron 1978, 34, 1349, Dubois, Fort, J. F, J. Am. Chem. Soc. 1972, 28, 1653.
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In the absence of a coordinating cation, threo products are obtained from (Z)-enolates: ref 2a and Noyori, R.; Yokoyama, K.; Sakata, J.; Ku-wajima. I.; Nakamura, E.; Shimizu, M.J. Am. Chem. Soc. 1977, 99, 1265, Very low stereoselection is observed in protic media: Fellmann, P.; Dubois, J.E. Tetrahedron 1978, 34, 1349, Dubois, J.E.; Fort, J. F, J. Am. Chem. Soc. 1972, 28, 1653. See also Naruta, Y.J. Am. Chem. Soc. 1980, 102, IIH.
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(1980)
J. Am. Chem. Soc.
, vol.102
, pp. IIH
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Naruta, Y.1
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35
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0001529746
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Titanium tetrachloride mediated reaction of crotyltrimethylsilane with propanal produced a mixture of erythro (60%) and threo (40%) isomers. This may be due to the fact that the affinity of Si toward oxygen atoms is higher than that of Sn, and hence that the reaction via Si involves more or less the cyclic transition state. For the affinity of Si and Sn, see: Itoh, K.; Matstjzaki, K.; Ishii, Y.J. Chem. Soc. C 1968, 2709. Itoh, K.; Fukumoto, Y.; Ishii, Y. Tetrahedron Lett. 1968, 3199. The addition of crotyl bromide to aldehydes with chromous ion provides the threo products regardless of the geometry of the starting material: Okude, Y.; Hirano, S.; Hiyama, T.; Nozaki, H.J. Am. Chem. Soc. 1977,99, 3179.
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Titanium tetrachloride mediated reaction of crotyltrimethylsilane with propanal produced a mixture of erythro (60%) and threo (40%) isomers. This may be due to the fact that the affinity of Si toward oxygen atoms is higher than that of Sn, and hence that the reaction via Si involves more or less the cyclic transition state. For the affinity of Si and Sn, see: Itoh, K.; Matstjzaki, K.; Ishii, Y.J. Chem. Soc. C 1968, 2709. Itoh, K.; Fukumoto, Y.; Ishii, Y. Tetrahedron Lett. 1968, 3199. The addition of crotyl bromide to aldehydes with chromous ion provides the threo products regardless of the geometry of the starting material: Okude, Y.; Hirano, S.; Hiyama, T.; Nozaki, H.J. Am. Chem. Soc. 1977,99, 3179. Buse, C.T.; Heathcock, C.H. Tetrahedron Lett. 1978, 1685.
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(1978)
Tetrahedron Lett.
, pp. 1685
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Buse, C.T.1
Heathcock, C.H.2
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36
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0011486463
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Crotyltins were prepared according to 1976, 121, 155; Tetrahedron Lett.
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Crotyltins were prepared according to M-Tchiroukhine, E.; Cadiot, P.J. Organomet. Chem. 1976, 121, 155; Tetrahedron Lett. 1976, 121, 169.
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(1976)
J. Organomet. Chem.
, vol.121
, pp. 169
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M-Tchiroukhine, E.1
Cadiot, P.2
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37
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33847086576
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Note Added in Proof: In a communication that appeared subsequent to submission of this manuscript. Professor Noyori and co-workers report that an acylic transition state may be involved in the reaction of enol silyl ethers with acetals in the presence of catalytic amounts of Me3SiOTf; We also learned that the similar stereoselection of allylic tin derivatives was observed by Professor Koreeda, University of Michigan, private communication.
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Note Added in Proof: In a communication that appeared subsequent to submission of this manuscript. Professor Noyori and co-workers report that an acylic transition state may be involved in the reaction of enol silyl ethers with acetals in the presence of catalytic amounts of Me3SiOTf; Murata, S.; Suzuki, M.; Noyori, R.J. Am. Chem. Soc. 1980,102, 3248. We also learned that the similar stereoselection of allylic tin derivatives was observed by Professor Koreeda, University of Michigan, private communication.
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(1980)
J. Am. Chem. Soc.
, vol.102
, pp. 3248
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Murata, S.1
Suzuki, M.2
Noyori, R.3
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