Ring opening reactions of tetrahydrofurane with phosphorus halides
โ Scribed by Paul Peringer; Peter-Paul Winkler
- Book ID
- 108328283
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 153 KB
- Volume
- 118
- Category
- Article
- ISSN
- 0020-1693
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๐ SIMILAR VOLUMES
d at room temperature under an inert gas atmosphee. The color of the reaction mixture changes from yellow to red-brown. The crude product is filtered off and recrystallized from CH,0H/CH2C12; yield ca. 51%.
By ring-opening copolymerization of 1,4-anhydr0-2,3-di-O-ethyl-~-erythritol (cis-3,4-diethoxyoxolane, 1) or 1,4:2,5:3,6-trianhydro-~-mannitol (3) with tetrahydrofuran carbohydratecontaining copolyether polyols were obtained. Using trifluoromethanesulfonic acid as catalyst the molecular weights were
A6struct; Eu(dpm), [dpm: dipivaloylmetbanate] catalyzes the ring-opening reaction of epoxides with acyl halides affording the correspondii 2-habakyl esters. The stewochemical course was confirmed as frms-addition in the case of the reaction of cyclohexene oxide. 0 I 998 Elsevier Smnce Ltd.