- Method for Synthesis of 2,5-Dioxane-1,4-Diones
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The invention relates to a novel method for the synthesis of 2,5-dioxane-1,4-diones having formula (I), comprising the oxidation of the ketone function of a cyclic compound having formula (II), wherein R1, R2, R3 and R4 independently represent the hydrogen atom, halo, (C2-C6) alkenyl, (C3-C7)cycloalkyl, cyclohexenyl and a radical having formula —(CH2)m—V—W.
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Page/Page column 3
(2008/06/13)
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- THE ACID CATALYZED CYCLIZATION OF DIAZOKETONES: PREPARATION OF 2,4(3H,5H)FURANDIONES
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Diazoketones derived from substituted ethyl hydrogen malonates produced by the selective hydrolysis of the corresponding malonate esters cyclize in the presence of catalytic amounts of boron trifluoride etherate in methanol to yield 2,4(3H,5H)furandiones.The cyclic keto orthoesters appear to be intermediates in the reaction.
- Miller, R. D.,Theis, W.
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p. 1039 - 1042
(2007/10/02)
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