- An efficient method for the cleavage of p-methoxybenzylidene (PMP), tetrahydropyranyl (THP) and 1,3-dithiane protecting groups by Selectfluor
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A new and efficient method for the cleavage of the PMP, THP and 1,3-dithiane protecting groups with Selectfluor has been developed.
- Liu, Junjie,Wong, Chi-Huey
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p. 4037 - 4039
(2007/10/03)
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- Enzymatic synthesis of a branched-chain hexulose: 5-Deoxy-5-C- hydroxymethyl-β-L-xylo-hex-2-ulopyranose
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The coupling of dihydroxyacetone phosphate with 3-hydroxy-2- (hydroxymethyl)propanal (1) in the presence of rabbit muscle aldolase afforded a branched-chain hexulose phosphate isolated in 64% yield as the barium salt 3. The parent, dephosphorylated sugar 4 was converted to its anhydro derivative 8 and glycoside 9.
- David, Serge
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p. 1415 - 1420
(2007/10/03)
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- A 13C AND 1H NMR STUDY OF FORMALDEHYDE REACTIONS WITH ACETALDEHYDE AND ACROLEIN. SYNTHESIS OF 2-(HYDROXYMETHYL)-1,3-PROPANEDIOL
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The 13C i 1H NMR spectra of various formaldehyde-acetaldehyde and formaldehyde-acrolein mixtures in buffered aqueous solutions were examined.Reaction intermediates and products were assayed including 3-hydroxypropanal, 3-hydroxy-2-(hydroxymethyl)propanal, pentaerythrose and pentaerythritol.Reaction mixtures were hydrogenated under various conditions to yield mixtures of 1,3-propanediol, pentaerythritol and 2-(hydroxymethyl)-1,3-propanediol.The latter compound was also prepared by an efficient new procedure from 3,3-diethoxy-2-(hydroxymethyl)-1-propanol.
- Nielsen, Arnold T.,Moore, Donald W.,Schuetze, Bryan D.
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p. 1393 - 1403
(2007/10/02)
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