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0001535146
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A part of this paper was published in a communication. J. Nakao, R. Inoue, H. Shinokubo, and K. Oshima, J. Org. Chem., 62, 1910 (1997).
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43
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85033143247
-
-
note
-
2O provided 2-deuteriophenyl prenyl ether in 93% yield (> 98%d).
-
-
-
-
44
-
-
85033129643
-
-
note
-
3MnLi, formation of anionic species might compete with formation of a radical which is generated by single electron transfer form manganate(II) to halo ether.
-
-
-
-
45
-
-
85033150218
-
-
note
-
3MnLi.
-
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46
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0000057831
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Decomposition of the dialkylmanganese species has been reported. M. Tamura and J. Kochi, J. Organomet. Chem., 29, 111 (1971).
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Tamura, M.1
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47
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85033137925
-
-
note
-
An alternative mechanism, an iodine-manganese exchange followed by anionic carbomanganation giving 8, could not be negated. A more detailed study is obviously necessary to conclude the mechanism.
-
-
-
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48
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0004125345
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John Wiley & Sons, Chichester
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33845280764
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Examples of sequences: (1) radical cyclization, (2) reduction to an organometallic, and (3) electrophilic trapping: a) W. A. Nugent and T. V. RajanBabu, J. Am. Chem. Soc., 110, 8561 (1988); b) K. Takai, K. Nitta, O. Fujimura, and K. Utimoto, J. Org. Chem., 54, 4732 (1989);
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Nugent, W.A.1
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50
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33845183971
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Examples of sequences: (1) radical cyclization, (2) reduction to an organometallic, and (3) electrophilic trapping: a) W. A. Nugent and T. V. RajanBabu, J. Am. Chem. Soc., 110, 8561 (1988); b) K. Takai, K. Nitta, O. Fujimura, and K. Utimoto, J. Org. Chem., 54, 4732 (1989);
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51
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85033144571
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See Ref. 7
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c) See Ref. 7.
-
-
-
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52
-
-
85033146790
-
-
note
-
2 afforded only the reduced product, phenyl prenyl ether, or N,N-diprenylaniline in 20 or 30% yield along with the recovered starting materials.
-
-
-
-
53
-
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85033141775
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-
note
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2) by oxygen to complete a catalytic cycle.
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56
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0000267876
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0001586445
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G. Stork, P. M. Sher, and H.-L. Chen, J. Am. Chem. Soc., 108, 6384 (1986).
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59
-
-
85033127509
-
-
note
-
3B afforded 12g in 99% yield (E/Z = 44/56) (Chart 1). Chemical equations presented
-
-
-
-
61
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-
0027986915
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Recently nickel or cobalt-catalyzed radical cyclization reaction has been reported. A. Vaupel and P. Knochel, Tetrahedron Lett., 35, 8349 (1994); T. Bamhaoud and J. Prandi, J. Chem. Soc., Chem. Commun., 1996, 1229.
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Vaupel, A.1
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0027986915
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Recently nickel or cobalt-catalyzed radical cyclization reaction has been reported. A. Vaupel and P. Knochel, Tetrahedron Lett., 35, 8349 (1994); T. Bamhaoud and J. Prandi, J. Chem. Soc., Chem. Commun., 1996, 1229.
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J. Chem. Soc., Chem. Commun.
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Bamhaoud, T.1
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63
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49349140549
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P. A. Grieco, T. Oguri, and Y. Yokoyama, Tetrahedron Lett., 1978, 419.
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64
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0001209483
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T. Morikawa, T. Nishiwaki, Y. Iitake, and Y. Kobayashi, Tetrahedron Lett., 28, 671 (1987).
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65
-
-
85033155126
-
-
note
-
In contrast to the catalytic reaction of 1a, in which the presence of oxygen was essential, the catalytic reaction of 11 was complete in 3 h at 0 °C under argon atmosphere in a sealed system. Thus, single electron transfer from zero-valent manganese to 2-iodoethanal acetal would provide alkyl radical and manganese(I) species as shown below (Chart 2). Chemical equations presented
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