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Preparation of [1-13C], [3-13C], [1-D] and [3-D] Enriched Cyclobutenes

✍ Scribed by Børge Bak; Jens Jørgen Led

Publisher
John Wiley and Sons
Year
1968
Tongue
French
Weight
299 KB
Volume
4
Category
Article
ISSN
0022-2135

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✦ Synopsis

Three isotopically enriched samples of cyclobutene have been prepared, namely, a mixture containing 20 % [1-13C]cyclobutene, 20 [3J3C]cyc1obutene and 60 % parent molecule; a second mixture of 75 [I-Dlcyclobutene and 25 % parent rnolecufe; and a third mixture of 50 % [3-D]cyclobutene and 50 % parent molecule. Proton magnetic resonance and infrared spectra showed the samples to be of high purity (> 95 x). The preparations successfully have been used f o r high-resolution microwave studies. The observed microwave line intensities also agreed with the percentage compositions given above.

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