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15
-
-
61349147556
-
-
Although we examined the 1,4- and 1,2-double nucleophilic addition using the imine 1 N-substituted with a TBS group, 1,4- and 1,2-double addition products were not obtained
-
Although we examined the 1,4- and 1,2-double nucleophilic addition using the imine 1 N-substituted with a TBS group, 1,4- and 1,2-double addition products were not obtained.
-
-
-
-
16
-
-
61349168213
-
-
When 1,4- and 1,2-double nucleophilic addition was carried out using the αβ-unsaturated inline having an electron-withdrawing group at the nitrogen, a 1,4-addition product was obtained instead of 1,4- and 1,2-adducts
-
When 1,4- and 1,2-double nucleophilic addition was carried out using the αβ-unsaturated inline having an electron-withdrawing group at the nitrogen, a 1,4-addition product was obtained instead of 1,4- and 1,2-adducts.
-
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17
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33747252279
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(a) Shimizu, M.; Takahashi, A.; Kawai, S. Org. Lett. 2006, 8, 3585.
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Shimizu, M.1
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33749131818
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-
61349117824
-
-
For example, benzophenone was obtained from the reaction below, Chemical Equation Presented
-
For example, benzophenone was obtained from the reaction below. (Chemical Equation Presented)
-
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-
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28
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0035914104
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(a) Tomioka, K.; Shioya, Y.; Nagaoka, Y.; Yamada, K. J Org. Chem. 2001, 66, 7051.
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0028205241
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30
-
-
61349098299
-
-
Calculations were carried out using the SPARTAN pro program and optimization with 6-3IG*.
-
Calculations were carried out using the SPARTAN pro program and optimization with 6-3IG*.
-
-
-
-
31
-
-
61349184167
-
-
The difference in the method of calculation (HF/STO-3G, and PM3) has little influence on a qualitative conclusion.
-
The difference in the method of calculation (HF/STO-3G, and PM3) has little influence on a qualitative conclusion.
-
-
-
-
32
-
-
33746310614
-
-
2O, Amberlyst 15DRY, and Florisil gave 1,4- and 1,2-addition products 2aa in low yields. The amount and the shape of silica gel were also examined. See the Supporting Information. Examples using silica gel as a reaction promoter, see: Shimizu, M.; Tanaka, M.; Itoh, T.; Hachiya, I. Synlett 2006, 1687.
-
2O, Amberlyst 15DRY, and Florisil gave 1,4- and 1,2-addition products 2aa in low yields. The amount and the shape of silica gel were also examined. See the Supporting Information. Examples using silica gel as a reaction promoter, see: Shimizu, M.; Tanaka, M.; Itoh, T.; Hachiya, I. Synlett 2006, 1687.
-
-
-
-
33
-
-
61349135235
-
-
1H NMR that 1,4-1,2-adduct products 2a were changed to 1,4-adducts via retro-Strecker reaction (Table 1, entries 3, 4, 6). Since the adducts were not stable, the addition reactions were not examined with 1a in detail (Table 1, entries 8-11).
-
1H NMR that 1,4-1,2-adduct products 2a were changed to 1,4-adducts via retro-Strecker reaction (Table 1, entries 3, 4, 6). Since the adducts were not stable, the addition reactions were not examined with 1a in detail (Table 1, entries 8-11).
-
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33748661764
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Regioselectivity on the addition of nucleophiles to αβ- unsaturated aldimimes has been studied previously, see ref 4c. Examples using αβ-unsaturated aldimimes for the β-lactam synthesis, see: (a) Fleming, I, Kilburn, J. D. J. Chem. Soc, Perkin Trans. 1 1998, 2663
-
Regioselectivity on the addition of nucleophiles to αβ- unsaturated aldimimes has been studied previously, see ref 4c. Examples using αβ-unsaturated aldimimes for the β-lactam synthesis, see: (a) Fleming, I.; Kilburn, J. D. J. Chem. Soc., Perkin Trans. 1 1998, 2663.
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