Autoxidation Reaction Mechanism for L-Ascorbic Acid-related Compounds in Methanol without Metal Ion Catalysis
The autoxidation mechanism for L-ascorbic acid (ASA)-related compounds such as D-arabo-ascorbic acid (= erythorbic acid; ERA) and triose reductone (TR) in methanol without metal ion catalysis was studied.The oxidation reaction of these ASA-related compounds seems to proceed via the C(2) oxygen adduct of ERA (or TR) by a similar reaction mechanism to that of ASA. - Keywords: L-ascorbic acid; autoxidation; D-erythorbic acid; triose reductone; C(2) oxygen adduct
Miyake, Noriko,Kurata, Tadao
p. 811 - 813
(2007/10/03)
A new efficient access to glycono-1,4-lactones by oxidation of unprotected itols by catalytic hydrogen transfer with RhH(PPh3)4-benzalacetone system
Treatment of unprotected pentitols and hexitols with RhH(PPh3)4-benzalacetone system leads exclusively to glycono-1,4-lactones in 60-96% yield.
Isaac,Aizel,Stasik,Wadouachi,Beaupère
p. 475 - 476
(2007/10/03)
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