A new entry for the deprotection of monothioacetals and dithioacetals: Silver nitrite - iodine system
β Scribed by Kiyoharu Nishide; Kouichi Yokota; Daisaku Nakamura; Toshio Sumiya; Manabu Node; Masaru Ueda; Kaoru Fuji
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 233 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Abslnwt: A new reagent sysrcm (silver ni~ri&odine)
was developed for demonohioacekalisadon and dcdithiaacetalization madons. The reaction using his reagent t&or&d the parent carbonyl coopound in excellent yield under mild conaWns.
π SIMILAR VOLUMES
Hypervalent iodine(III)-induced dimerization of indole derivatives, mitragynine, tetrahydrocarbazole, and N b -carbomethoxytryptamine, was investigated. By applying this procedure, the concise total synthesis of rac-and meso-chimonanthines was accomplished.
## Abstract Bromodimethylsulfonium bromide (BDMS) in combination with silver triflate provides a very efficient thiophilic promoter system, capable of activating both βdisarmedβ and βarmedβ thioglycosides for glycosidic bond formation. The usefulness of this new promoter is illustrated by a success