Building Blocks

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

Versatile small molecule scaffold

<p>2,4,4-Trimethyl-2-oxazoline is a potassium hydride reagent that has been used to study the mechanism of nucleophilic addition reactions. The acidity of this compound is determined by the presence of an acidic hydrogen atom on one side of the molecule. 2,4,4-Trimethyl-2-oxazoline can be used as a cationic polymerization monomer to produce polymers with high molecular weights. This compound is prepared by an ultrasonic preparative method in a solvent containing water and a base such as pyridine or triethylamine. Preparations must be done in an acidic environment because 2,4,4-trimethyl-2-oxazoline hydrolyzes readily in basic conditions. The viscosity of 2,4,4-trimethyl-2-oxazoline increases with increasing concentration and temperature. It also has a tendency to form hydrogen bonds with other molecules.</p>

The 8-hydroxynaphthalene-1-carboxylic acid (8HNCA) is a nonfluorescent, organic molecule that has been shown to form lactone at the interface with water. The 8HNCA has a diameter of 1.73 Å and is able to react at rates up to 10 times faster than in bulk solution. It can be used as an indicator for reactions occurring at the interface between two different liquids. The fluorescence of 8HNCA can be observed when it is excited by laser light and its reaction rate can be measured by observing the time dependence of the fluorescence emission intensity.

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>2-Hydroxy-5-phenylbenzaldehyde is a fluorescent probe that is used in the detection of amines and thiosemicarbazides. 2-Hydroxy-5-phenylbenzaldehyde has been shown to have antibacterial activity against bacteria such as subtilis and Staphylococcus aureus. This compound also emits fluorescence when it reacts with an amine or thiosemicarbazide, which can be used to detect these compounds. 2-Hydroxy-5-phenylbenzaldehyde also reacts with triethyl orthoformate under acidic conditions, producing ethylene and formic acid, which can be used to produce a volatile gas that can be detected by gas chromatography (GC).</p>

<p>Versatile small molecule scaffold</p>

<p>4-Chloro-2-methyl-6-nitrophenol is an organic compound with the chemical formula C6H4ClNO2. It is a white solid that is soluble in water, alcohols and ether. It has uses as a pesticide and in the manufacture of dyes, pharmaceuticals, and herbicides. 4-Chloro-2-methyl-6-nitrophenol can be made by reacting phosphorus pentachloride with chlorophenols at temperatures below 100 °C. The reaction can also be activated by adding hydrochloric acid or absorbing electromagnetic radiation such as sunlight. The phototransformation of 4CMPNP to its photoproducts is dependent on irradiation wavelength. Irradiation of 4CMPNP with ultraviolet light leads to the formation of 3,5-dichloroaniline (3,5 DCA). The interaction between 4CMPNP and chlorine ions produces colorless monochlorob</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>