143.4 (C), 140.3 (C), 133.6 (C-2), 129.9 (2CH), 126.3 (2CH), 123.3
(C-3), 120.2 (C-5), 109.0 (C-4), 21.0 (CH3 in Ts), 12.0 (2-CH3).
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Acknowledgements
This research was supported by the Presidential grant for young
scientists no. MK-4400.2011.3.
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1,3-diazepin-2-ones which remain practically unknown with only rare
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