Indene is a clear to yellowish liquid ; boils at 181C and melts at -2 C. It is a
polynuclear hydrocarbon compound with a five-membered ring fused to benzene
ring. Indan, 2,3-dihydroindene, is a clear to yellowish liquid; boiling point
177 C; insoluble in water; soluble in alcohol and ether. They are obtained from coal tar distillation; used as solvents,
raw material for synthetic resins and to make other organic compounds such as
pharmaceutical ingredients and agrochemicals especially plant growth regulators.
Some indane compounds have the characteristic odour and are used for the
preparation of perfumes and flavouring agents. Indanone is a ketone
form of indane. A main industrial application of indene is the production of indene/cumarone
thermoplastic resin. There are position isomers, 1-indanone and 2-indanone. Indanone is known
as an important drug intermediate for serotonin reuptake inhibitors
and others. Oxime is any compound with the general formula R\R'/C=N-OH,
where R and R' are hydrogen atoms or organic groups derived by removal of a
hydrogen atom from an organic compound. Oximes are condensation products of
hydroxylamines with aldehydes (forming aldoxime), ketones (forming ketoxime),
or quonone.
There are two geometrical isomer: syn and anti isomer (the term syn-anti
isomerism is for stereoisomers by other atoms' unsaturated bond rather than
carbon). Two isomers have very different properties. Oximes
are converted into corresponding amides by reaction of Beckmann rearrangement (usually using
sulphuric acid as a catalyst). Oximes are used as chemical building block for the synthesis of agrochemicals
and pharmaceuticals. Indanedione is the nucleus of
synthetic anticoagulants for the treatment of disorders in which there is
excessive or undesirable clotting, such as thrombophlebitis, pulmonary embolism,
and certain cardiac conditions. They inhibits the hepatic synthesis of the
vitamin K–dependent coagulation factors. Anticoagulants act as rodenticide by
causing massive hemorrhaging. Indanedione class anticoagulants or rodenticides
include diphenadione, phenindione, pindone, and valone. Indane class compounds
show various functions such as light and temperature sensitivity, heat
resistance, conductivity, emittability, corrosion resistance and detection of
amino groups. They are used in the applications of thermo and light sensitizer,
liquid crystal chemistry, optical brightening agents, luminescence chemistry,
spectrophotometric analysis, molecular chemistry, organometallic-complexes and
biochemorphology industry. Indane class compounds can create perfumes, aroma chemicals or fragrance
enhancers. They also contribute to the development of drugs having analgesic,
anaesthetic and sedative properties, and antibiotics.