Formation of 2,5-anhydro derivatives in the zemplén de-acetylation of acetylated sugar formazans

Virág Zsoldos, András Messmer, I. Pintér, András Neszmélyi

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Deacetylation of acetylated d-galactose and 6-deoxy-d-galactose diphenylformazans under Zemplén conditions required much more (1.1 mol.) than the usual catalytic amount of sodium methoxide to complete the reaction, and 2,5-anhydro-d-talose diphenylformazans were obtained. The structure of the products was proved by 1H- and 13C-n.m.r. spectroscopy, and a mechanism for the reaction is suggested.

Original languageEnglish
Pages (from-to)105-116
Number of pages12
JournalCarbohydrate Research
Volume62
Issue number1
DOIs
Publication statusPublished - 1978

Fingerprint

Formazans
Acetylation
Galactose
Sugars
Derivatives
Methanol
Spectrum Analysis
Spectroscopy
L-talo-gamma-lactone

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Organic Chemistry

Cite this

Formation of 2,5-anhydro derivatives in the zemplén de-acetylation of acetylated sugar formazans. / Zsoldos, Virág; Messmer, András; Pintér, I.; Neszmélyi, András.

In: Carbohydrate Research, Vol. 62, No. 1, 1978, p. 105-116.

Research output: Contribution to journalArticle

Zsoldos, Virág ; Messmer, András ; Pintér, I. ; Neszmélyi, András. / Formation of 2,5-anhydro derivatives in the zemplén de-acetylation of acetylated sugar formazans. In: Carbohydrate Research. 1978 ; Vol. 62, No. 1. pp. 105-116.
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