Formation of 1,2-dioxacyclohexanes by the reaction of alkenes with tris(2,4-pentanedionato)manganese(III) or with β-ketocarbonyl compounds in the presence of manganese(III) acetate
作者:Shin-ichi Tategami、Takashi Yamada、Hiroshi Nishino、James D. Korp、Kazu Kurosawa
DOI:10.1016/s0040-4039(00)97067-9
日期:1990.1
1-octene, 1-nonene, cyclohexene and cyclooctene with tris(2,4-pentanedionato)manganese(III) in acetic acid at room temperature give 4-acetyl-3-hydroxy-3-methyl- 1,2-dioxacyclohexanes in 8–92 % yields. The reactions of 1,1-disubstituted ethenes with ethyl 3-oxobutanoate or acetoacetanilide in the presence of manganese(III) acetate also give cording 1,2-dioxacyclohexanes in good to moderate yields.
a mixture of manganese(II) and manganese(III) acetates, and molecular oxygen yielded substituted 1, 2-dioxan-3-ols 3 in 14–95% yields. Cobalt(III) acetate, potassium permanganate, lead(IV) acetate, copper(II) acetate, chromium(VI) trioxide, thallium(III) acetate, ammonium cerium(IV) nitrate and iron(III) perchlorate were also used in place of manganese(III) acetate. Effects on the product yields of