CPC C09K 19/18 (2013.01) [C07C 15/54 (2013.01); C07C 25/24 (2013.01); C07C 331/28 (2013.01); C09K 2019/181 (2013.01); C09K 2219/11 (2013.01)] | 14 Claims |
1. A compound of formula I-1
in which
R1 denotes ethyl, n-propyl, n-butyl, n-pentyl, or n-hexyl,
RL denotes ethyl.
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