Search results
Results from the WOW.Com Content Network
2-Nitrobenzaldehyde is an intermediate in an early route to indigo, a water-insoluble dye commonly used to dye jeans and other fabrics.In the Baeyer-Drewson indigo synthesis, 2-nitrobenzaldehyde condenses with acetone in basic aqueous solution to yield indigo in a one-pot synthesis [9] [10] The method was abandoned in the early part of the 20th century, being replaced by routes from aniline.
β-Nitrostyrene is a chemical precursor for slimicides and dyes. Specifically bromo-nitrostyrene is obtained upon treatment with bromine followed by partial dehydrohalogenation [2] while 2-nitrobenzaldehyde is obtained by treatment with ozone respectively.
Nitrobenzene is an aromatic nitro compound and the simplest of the nitrobenzenes, with the chemical formula C 6 H 5 NO 2. It is a water-insoluble pale yellow oil with an almond -like odor. It freezes to give greenish-yellow crystals.
Amygdalin 2 H 2 O HCN benzaldehyde 2 × glucose 2 × Benzaldehyde contributes to the scent of oyster mushrooms (Pleurotus ostreatus). Reactions Benzaldehyde is easily oxidized to benzoic acid in air at room temperature, causing a common impurity in laboratory samples. Since the boiling point of benzoic acid is much higher than that of benzaldehyde, it may be purified by distillation. Benzyl ...
Bretherick’s Handbook of Reactive Chemical Hazards is a well-established source of information on chemical safety, often known by its author’s name, and often cited in the chemical and chemical engineering literature. In recent editions it has been in two volumes, volume 1 being individual compounds and hazardous reactions, volume 2 being ...
Nitrobenzaldehyde may refer to any of the three isomeric chemical compounds : 2-Nitrobenzaldehyde; 3-Nitrobenzaldehyde; 4-Nitrobenzaldehyde; isomers of ...
When conducting a workplace hazard assessment, occupational hygienists may find it useful to start with occupational exposure banding to identify potential hazards and exposure ranges, before moving on to control banding. Together, these tools will aid the health & safety professional in selecting the appropriate risk mitigation strategies.
In the first step of the reaction mechanism the precursor molecule 2-nitrobenzaldehyde 4 is protonated, often by sulfuric acid, to intermediate 5, followed by an electrophilic attack to benzene (other arenes can be used as well). The resulting benzhydrol 6 cyclisizes to 7 and finally to compound 8.