Chemistry Letters p. 695 - 696 (1981)
Update date:2022-07-30
Topics:
Nakatsuka, Shin-ichi
Sasaki, Kenji
Yamaguchi, Ken-ichiro
Goto, Toshio
Kinetic monoalkylation of 3,6-dimethoxy-1,4-dimethyl-2,5-piperazinedione 2a via its anion gave a single stereoisomer (3) in which two methoxy groups are in the same side.Acid catalyzed equilibrium of 3 gave a mixture of 3 and its stereoisomer 4 in about 1:1 ratio.Acylation also gave a monoacylated product.
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Doi:10.1016/j.tet.2006.10.071
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(2006)
