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77953817228
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All attempts to carry out the cycloaddition reactions were performed as follows: under dry argon a solution of cx-oxo ketene 12 (0.5 mmol) in hexane (3 mL) was treated with the dienophile (1 equiv.), and the mixture was stirred, for 9 h at room temp. Analysis of the reaction mixture showed no products, but the starting a-oxo ketene unmodified
-
All attempts to carry out the cycloaddition reactions were performed as follows: under dry argon, a solution of cx-oxo ketene 12 (0.5 mmol) in hexane (3 mL) was treated with the dienophile (1 equiv.), and the mixture was stirred, for 9 h at room temp. Analysis of the reaction mixture showed no products, but the starting a-oxo ketene unmodified.
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49649134694
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The only published synthesis of this compound involved the pyrolysis of tert-butyl ketene bis(trirnethylsilyl)acetal followed by the solvolysis of the formed, disilylated 2-tert-butyl-3-oxo5, 5-dimethylhexanoic acid: C. Ainsworth, Y.-N. Kuo, J. Organomet. Chem. 1972, 46, 73-87.
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43
-
-
77953820353
-
-
3
-
3.
-
-
-
-
44
-
-
77953848045
-
-
Ad) ppm
-
Ad) ppm.
-
-
-
-
47
-
-
0004078505
-
-
Release 2.1d. Crystal Impact GbR, Bonn, Germany
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K. Brandenburg, DIAMOND, Release 2.1d. Crystal Impact GbR, Bonn, Germany, 2000.
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Diamond
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Brandenburg, K.1
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