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Umeda, N.1
Tsurugi, H.2
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12
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77954092636
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There have been several reports on transition-metal-catalyzed syntheses of indenone derivatives. See
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There have been several reports on transition-metal-catalyzed syntheses of indenone derivatives. See
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15
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33845203735
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Wender, P. A.; Paxton, T. J.; Williams, T. J. J. Am. Chem. Soc. 2006, 128, 14814
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Wender, P.A.1
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34247847728
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Harada, Y.; Nakanishi, J.; Fujihara, H.; Tobisu, M.; Fukumoto, Y.; Chatani, N. J. Am. Chem. Soc. 2007, 129, 5766
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Harada, Y.1
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55149112396
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Liu, C.-C.1
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18
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77954140711
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Indenones are used as starting materials for synthesizing indenes and indenyl-transition-metal complexes. See
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Indenones are used as starting materials for synthesizing indenes and indenyl-transition-metal complexes. See
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19
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0024511965
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Anstead, G. M.; Ensign, J. L.; Peterson, C. S.; Katzenellenbogen, J. A. J. Org. Chem. 1989, 54, 1485
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Anstead, G.M.1
Ensign, J.L.2
Peterson, C.S.3
Katzenellenbogen, J.A.4
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21
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14944367862
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Indenones are key intermediates for the synthesis of bioactive products. See
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Indenones are key intermediates for the synthesis of bioactive products. See: Walspurger, S.; Vasilyev, A. V.; Sommer, J.; Pale, P. Tetrahedron 2005, 61, 3559
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(2005)
Tetrahedron
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Walspurger, S.1
Vasilyev, A.V.2
Sommer, J.3
Pale, P.4
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22
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77954092635
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12, 0%
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12, 0%.
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23
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77954113156
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Investigation of several additives: aniline, 80%; 4-methoxyaniline, 75%; 4-trifluoromethylaniline, 98%; N -methylaniline, 62%; N, N -dimethylaniline, 0%
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Investigation of several additives: aniline, 80%; 4-methoxyaniline, 75%; 4-trifluoromethylaniline, 98%; N -methylaniline, 62%; N, N -dimethylaniline, 0%.
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24
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77954122467
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5 and N -phenylacetamide, an intermediate, isobenzofuran, was not observed, and benzaldehyde was recovered completely. The result indicates that the formation of the isobenzofurans from 2 equiv of aldehydes requires heating at 180 -°C
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5 and N -phenylacetamide, an intermediate, isobenzofuran, was not observed, and benzaldehyde was recovered completely. The result indicates that the formation of the isobenzofurans from 2 equiv of aldehydes requires heating at 180 -°C.
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25
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77954097631
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In the case of known cyclotrimerizations of aldehydes, 1,3,5-trioxane derivatives are formed. See
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In the case of known cyclotrimerizations of aldehydes, 1,3,5-trioxane derivatives are formed. See
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26
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77954102700
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(Daicel Chemical Industries, Ltd.), JP P2002-145877A
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Ishii, Y.; Nakano, T. (Daicel Chemical Industries, Ltd.), JP P2002-145877A, 2002.
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(2002)
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Ishii, Y.1
Nakano, T.2
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27
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0037191630
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Griesbeck, A. G.; El-Idreesy, T. T.; Fiege, M.; Brun, R. Org. Lett. 2002, 4, 4193
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Griesbeck, A.G.1
El-Idreesy, T.T.2
Fiege, M.3
Brun, R.4
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28
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77954100266
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We have already reported the rhenium-catalyzed synthesis of isobenzofuran derivatives via the insertion of aldehydes into a C-H bond of aromatic compounds followed by intramolecular nucleophilic cyclization and dehydration. See ref 3d
-
We have already reported the rhenium-catalyzed synthesis of isobenzofuran derivatives via the insertion of aldehydes into a C-H bond of aromatic compounds followed by intramolecular nucleophilic cyclization and dehydration. See ref 3d.
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29
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0001723369
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There has been a report on the reaction between 1-phenylisobenzofuran and a dienophile by Diels-Alder reaction. See
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There has been a report on the reaction between 1-phenylisobenzofuran and a dienophile by Diels-Alder reaction. See: Tobia, D.; Rickborn, B. J. Org. Chem. 1986, 51, 3849
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Tobia, D.1
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0034729924
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Yick, C.-Y.; Chan, S.-H.; Wong, H. N. C. Tetrahedron Lett. 2000, 41, 5957
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(2000)
Tetrahedron Lett.
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Yick, C.-Y.1
Chan, S.-H.2
Wong, H.N.C.3
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31
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77954124082
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Another possibility is the formation of an aldimine from hydroxy amide intermediate A by the elimination of acetic acid from A, and the C-H activation of the aldimine occurs
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Another possibility is the formation of an aldimine from hydroxy amide intermediate A by the elimination of acetic acid from A, and the C-H activation of the aldimine occurs.
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32
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77954138865
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3) atom as a directing group, see
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3) atom as a directing group, see
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33
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0000620613
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Diamond, S. E.; Szalkiewicz, A.; Mares, F. J. Am. Chem. Soc. 1979, 101, 490
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(1979)
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Diamond, S.E.1
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35
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0036012172
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Kakiuchi, F.; Igi, K.; Matsumoto, M.; Hayamizu, T.; Chatani, N.; Murai, S. Chem. Lett. 2002, 396
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Kakiuchi, F.1
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36
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34250861444
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Cai, G.; Fu, Y.; Li, Y.; Wan, X.; Shi, Z. J. Am. Chem. Soc. 2007, 129, 7666
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Cai, G.1
Fu, Y.2
Li, Y.3
Wan, X.4
Shi, Z.5
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37
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77954108181
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2) atom] is effective as a directing group
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2) atom] is effective as a directing group.
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38
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77954107070
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There have been several reports on nucleophilic addition of isobenzofurans to electrophiles. See
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There have been several reports on nucleophilic addition of isobenzofurans to electrophiles. See
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41
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77954112083
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Instead of steps 7 and 8, the following step could also occur: hetero-Diels-Alder reaction between the formed isobenzofuran intermediate and the third aldehyde. In fact, there has been a report on a Diels-Alder reaction between an isobenzofuran derivative and aldehyde. See ref 13
-
Instead of steps 7 and 8, the following step could also occur: hetero-Diels-Alder reaction between the formed isobenzofuran intermediate and the third aldehyde. In fact, there has been a report on a Diels-Alder reaction between an isobenzofuran derivative and aldehyde. See ref 13.
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42
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77954115440
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2O, which is formed by dehydration as shown in Scheme 1, steps 6 and 11
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2O, which is formed by dehydration as shown in Scheme 1, steps 6 and 11.
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