An original and facile method for the generation of β-naphtha-1-thioquinones using DAST and 2-naphthols has been developed. A series of dehydro-2-naphthol-1-sulphides or naphtha-oxathiane derivatives were synthesized by in situDiels–Alder cycloaddition reactions of β-naphtha-1-thioquinone with itself or various alkenes.
Effect of Moisture Content on the Thermomechanical Behavior of Concentrated Waxy Cornstarch–Water Preparations— A Comparison with Wheat Starch
作者:A. Rolee、E. Chiotelli、M. Le Meste
DOI:10.1111/j.1365-2621.2002.tb09451.x
日期:2002.4
ABSTRACT: The rheological behavior of waxy cornstarch preparations at intermediate moisture contents (30 to 60% w/w) was studied by dynamic mechanical thermal analysis (DMTA). Differential scanning calorimetry (DSC) and electron spin resonance (ESR) experiments were also performed in parallel. The results were compared to those obtained previously for wheat starch. DMTA results evidenced a critical moisture content (between 50 and 55%) for waxy cornstarch that delimited a radical change in the rheological behavior both at room temperature and during heating. This critical water content was around 45% for wheat starch.
Onufrowicz, Chemische Berichte, 1890, vol. 23, p. 3368
作者:Onufrowicz
DOI:——
日期:——
Christopher; Smiles, Journal of the Chemical Society, 1912, vol. 101, p. 716