Treatment of 4,6-diacetate 3 with tert-butyl hydroperoxide gave the Sr~2' product 6 in high yield, the formation of which presumeably involves an intermediary nitronate. The thus prepared 6 reacted with nucleophiles to afford 2,3-anhydro derivatives having the talo configuration.
First preparation of pyranosid nitroolefin having a peroxy group and its reaction with some nucleophiles
โ Scribed by Akinori Seta; Kiyohisa Tokuda; Tohru Sakakibara
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 122 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Treatment of nitroalkene I with t-butyl hydroperoxide and m-chloroperbenzoic acid gave the SIG?' product and 2,3-anhy&o derivative, respectively, in high yields. The former product is proved fo be usefur intermediate for introduction of nucleophiles at C-4.
To our best knowledge, there is no sport for preparation of nitm sugars having a reactive peroxy group. In general the reactions of niWenes with peroxi& such as t-butyl hydroperoxide give the nitro epoxide for its facile cleavage of the O-O bond.1 Assuming that the reaction between a hydmperoxide and nitroalkene having a gocd leaving group at the p-position affords the SN~' product, we have performed the reaction of 1 with r-bury1 hydroperoxide and indeed obtained the intending peroxy product 4 in high yield.
๐ SIMILAR VOLUMES
AgC 6 F 5 is directly and quantitatively formed from room temperature reactions of AgF and Me 3 SiC 6 F 5 in N-donor solvents, particularly EtCN. Solutions of AgC 6 F 5 prepared by this method exhibit excellent oxidative properties in reactions with a variety of groups 12 to 16 elements giving the c