sodium-acetate--anhydrous has been researched along with acetic-anhydride* in 3 studies
3 other study(ies) available for sodium-acetate--anhydrous and acetic-anhydride
| Article | Year |
|---|---|
Insights in starch acetylation in sub- and supercritical CO2.
An in-depth study on the acetylation of starch with acetic anhydride (Ac(2)O) and sodium acetate (NaOAc) as the catalyst in pressurized carbon dioxide (scCO(2)) in a broad pressure range (8-25MPa) and a temperature of 90°C is provided. Highest degrees of substitution (DS) of 0.29 (1h reaction time) and 0.62 (24h reaction time) were found near the critical point of the mixture (15MPa). The phase behavior of the system CO(2), starch and acetic anhydride (Ac(2)O) was studied in a high pressure view cell. The critical points were a clear function of the temperature and increased from the range of 9.4-10MPa to 14.5-14.8MPa when going from 50 to 90°C (Ac(2)O mole fraction at the critical point in the range of 0.08-0.09). Acetylation experiments with a range of starch particles sizes showed a clear relation between the DS and the particle size. Topics: Acetic Anhydrides; Acetylation; Carbon Dioxide; Esterification; Particle Size; Pressure; Sodium Acetate; Solanum tuberosum; Starch; Temperature; Time Factors | 2011 |
Three distinct reactions of 3,4-dihydroisoquinolines with azlactones: novel synthesis of imidazoloisoquinolin-3-ones, benzo[a]quinolizin-4-ones, and benzo[d]azocin-4-ones.
A facile and direct synthetic entry to tricyclic imidazoloisoquinolin-3-ones and benzo[a]quinolizin-4-ones is reported based on the ring annulation of 1-unsubstituted and 1-substituted dihydroisoquinolines with azlactones under neutral conditions in a one-step procedure. Bicyclic 2,3-dihydrobenzo[d]azocin-4-ones were also prepared using simple azlactone and 1-substituted dihydroisoquinolines in a one-pot reaction. [reaction: see text] Topics: Acetic Anhydrides; Animals; Azocines; Benzaldehydes; Hippurates; Imidazoles; Indicators and Reagents; Isoquinolines; Lactones; Magnetic Resonance Spectroscopy; Porifera; Quinolizines; Sodium Acetate; Stereoisomerism | 2006 |
Biological activities of new poly(N-1-adamantylmaleimide) and poly(N-1-diamantylmaleimide).
N-1-Diamantylmaleimide was synthesized by reaction of maleic anhydride with 1-aminodiamantane, followed by dehydration with acetic anhydride and sodium acetate. Poly(N-1-adamantylmaleimide) (IIa) and poly(N-1-diamantylmaleimide) (IIb) were synthesized by free radical polymerization. N-1-Adamanlylmaleimide (Ia) and N-1-diamantylmaleimide (Ib), exhibited strong activities in vitro antitumor activities. Interestingly, poly(N-1-adamantylmaleimide) exhibited growth inhibitory values against Colo 205, Hep G2, and SK-BR-3, similar to 5-Fluorouracil. It was noted that poly(N-1-adamantylmaleimide) showed relatively lower cytotoxicity against Molt-4 cells than against Colo 205, Hep G2, and SK-BR-3 cells. The decreasing antitumor activities against individual tumor cell line were in the order Ia > Ib > IIa > IIb. This result shows that N-substituents of maleimides play an important role in their antitumor activity. Additionally, Ia and Ib show good in vitro activity against staphylococcus aureus ATCC 25923 while polymers IIa and IIb exhibited weak activity against S. aureus ATCC 25923. Topics: Acetic Anhydrides; Adamantane; Anti-Bacterial Agents; Antineoplastic Agents; Biocompatible Materials; Escherichia coli; Maleic Anhydrides; Maleimides; Polymers; Pseudomonas aeruginosa; Sodium Acetate; Staphylococcus aureus; Structure-Activity Relationship; Tumor Cells, Cultured | 1996 |