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Stereoselective synthesis of nitropyrazolines: 1,3-dipolar cycloaddition of diazoalkanes to (E)-4,5,6,7,8-penta-O-acetyl-1,2,3-trideoxy-2-C-nitro-d-manno-oct-2-enitol

✍ Scribed by Manuel Mancera; Enrique Rodriguez; Isaac Roffé; Juan A. Galbis; Clara F. Conde; Alejandro Conde

Book ID
107726051
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
445 KB
Volume
210
Category
Article
ISSN
0008-6215

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📜 SIMILAR VOLUMES

1-Methyl(or phenyl)-5-(penta-O-acetyl-d-
1-Methyl(or phenyl)-5-(penta-O-acetyl-d-galacto-pentitol-1-yl)pyrazoles from the reactions of 3,4,5,6,7-penta-O-acetyl-1,2-dideoxy-1-nitro-d-galacto-hept-1-enitol with aldehyde methyl(or phenyl)hydrazones
✍ Manuel Gómez-Guillén; José María Lassaletta Simon 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 887 KB

The title hept-I -enitol( 2) reacted with aldehyde methyl(or phenyl)hydrazones in refluxing methanol or butyl acetate to give I-methyl(or phenyl)-5-(penta-O-acetyl-~-~~u~u~f~~-pentitol-l-yl)pyrazoles in good (for I-methylpyrazoles) or moderate yields (for I-phenylpyrazolcs). The 0-deacetylated produ