Tetrahedron Letters p. 5519 - 5520 (1985)
Update date:2022-07-30
Topics:
Askani, R.
Littmann, M.
Based on the decarboxylative ring opening of 3-carboxyisoxazoles a new reaction sequence for the introduction of cyano groups on ketone 1 a is described.The isoxazoles 4 and 5 have been obtained by the cycloaddition of carboethoxyformonitrile oxide with enamines 2 a /3 a and removal of the morpholine ring by Cope elimination.The semibullvalenes 7 and 8 were prepared.
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Doi:10.1007/BF00519539
(1986)Doi:10.1021/jm00384a028
(1987)Doi:10.1016/0022-328X(86)82026-5
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(1986)Doi:10.1246/bcsj.59.1581
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(2018)
