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38
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3042848300
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note
-
Selenocarbonimidate 4b was also obtained in 72% yield when the reaction was carried out under conditions similar to those shown in eqs 1 and 2 by starting with MeOLi.
-
-
-
-
39
-
-
3042770309
-
-
note
-
1H NMR of 4b showed a set of peaks assignable to a single isomer. However, we could not determine the stereochemistry of the carbon-nitrogen double bond because a nuclear Overhauser effect was not observed when we irradiated methyl protons of 2,6-xylyl group in 4b.
-
-
-
-
40
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0000279927
-
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Triethylamine promoted the reaction of selenium with isocyanides to yield isoselenocyanates; see: Sonoda, N.; Yamamoto, G.; Tsutsumi, S. Bull. Chem. Soc. Jpn. 1972, 45, 2937.
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42
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84987529718
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Mizuno, T.; Nakamura, F.; Ishino, Y.; Nishiguchi, I.; Hirashima, T.; Ogawa, A.; Kambe, N.; Sonoda, N. Synthesis 1989, 770.
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43
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3242739937
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A few 2-imino-1,3-oxaselenoles have been synthesized, see: (a) Robert, A.; Marechal, A. L. J. Chem. Soc., Chem. Commun. 1978, 447.
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Leban, I.3
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45
-
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3042727789
-
-
note
-
The product selectivity observed is due to higher nucleophilicity of the selenium atom. In fact, the product ratio was almost the same when the reaction time was shortened to 1 h. Isolated 10e and 11e were not interconverted under similar reaction conditions.
-
-
-
-
46
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0035951572
-
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9b,d were prepared by modified reactions of the general procedure for synthesis of aryl alkynes reported in the following paper; Roesch, K. R.; Larock, R. C. J. Org. Chem. 2001, 66, 412.
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47
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0000817870
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Conversion of 2,6-xylidine to 2,6-xylyl formamide, see: Krishnamurthy, S. Tetrahedron Lett. 1982, 23, 3315. Dehydration of 2,6-xylyl formamide to 2,6-xylyl isocyanide, see: Obrecht, R.; Herrmann, R.; Ugi, I. Synthesis 1985, 400.
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Krishnamurthy, S.1
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48
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85005647840
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Conversion of 2,6-xylidine to 2,6-xylyl formamide, see: Krishnamurthy, S. Tetrahedron Lett. 1982, 23, 3315. Dehydration of 2,6-xylyl formamide to 2,6-xylyl isocyanide, see: Obrecht, R.; Herrmann, R.; Ugi, I. Synthesis 1985, 400.
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Obrecht, R.1
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Ugi, I.3
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