Bereitung von Xylose aus Buchenholz. Bemerkung über Diacetonglucose

Freudenberg, Karl; Molter, Hans; Dietrich, Gustav

doi:10.1002/cber.19470800111

Cited by 6 publications

(1 citation statement)

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“…As regards the preparation of compound 12, by t he acid hyd rol~'sis of compound 18, a survey of the literature showed that usc of 0.16 p ercent hy drochloric ariel [18,19], 0.2 percen t hydro chlori c acid [20,2]] , 0.04 N sulfuri c ar id [22], and 0.2 N sulfuric acid [28] h ad bee n recomme nded ; the last concentration cited ma.l· be a misprint. Aeco rdingl~' , a solution of compound 18 (10 g) in 25 0 ml of 0.05 N sulfuric acid was kep t at room tcmperatur e for 2 hours.…”

Section: 2 Other Absorption Bandsmentioning

confidence: 99%

Infrared absorption spectra of some cyclic acetals of sugars

Tipson¹,

Isbell²,

Stewart³

1959

J. RES. NATL. BUR. STAN.

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The infr ared absorption spcctra of t wenty-eigh t I-methoxycth y lidene and isopropylidene acetals of sugars have been record ed and analyzed. The formulas of t he compounds were gro uped according to structure, a nd t he absorp tion bands for each group were considered in relation to t h e bands found for t he other stru cturally related compounds. No bands were found for t he unequivocal d etection of t he 1,3-c1ioxola ne r ing attached respectiv ely to an aldopentofuranose or a ketopentofuranose, an aldopentopyranose, an wld ohexofuranose, an aldohexopyranose or a ketohexopyranose, a Ul'onic a cid salt or lactone, a sugar :,lcohol, or a sugar keto-acid salt. R egardless of t he fin e structure of t he dioxolane compounds, certain strong band s were observed, but t he bands a re not. easily recognized from an inspection of one or t wo spectra and a re not characteristic of t hese compound only.

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Section: 2 Other Absorption Bandsmentioning

confidence: 99%