Chemistry Letters p. 1577 - 1580 (1986)
Update date:2022-08-03
Topics:
Nozoe, Tetsuo
Takase, Kahei
Saito, Hiroaki
Yamamoto, Hiroshi
Imafuku, Kimiaki
Treatment of a wide variety of 2-(2-arylhydrazino)tropones with ethanolic acid at 50-80 deg C readily gave the benzidine type rearrangement products, i.e. 2-amino-5-(4-aminoaryl)tropones, which in turn were conveniently led to the corresponding 5-aryltropolones that can be utilized for synthesizing B-ring-open analogues of colchicine.
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Doi:10.1016/S0040-4039(00)85001-7
(1986)Doi:10.1007/s00044-020-02563-y
(2020)Doi:10.1007/s10562-018-2449-6
(2018)Doi:10.1039/P19870001719
(1987)Doi:10.1080/00397911.2019.1646286
(2019)Doi:10.1016/j.tetasy.2008.08.024
(2008)
