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Cyclopentanone is common precursor to fragrances, especially those related to jasmine and jasmone. Examples include 2-pentyl- and 2-heptylcyclopentanone. [4] It is a versatile synthetic intermediate, being a precursor to cyclopentobarbital. [5] Cyclopentobarbital, a drug made from cyclopentanone
2-Cyclopentenones can be synthesized in a number of ways. One of the routes involves elimination of α-bromo-cyclopentanone using lithium carbonate [2] and Claisen condensation-decarboxylation-isomerization cascades of unsaturated diesters as shown below. [3] Industrial synthesis of cyclopentenone
Cyclopentane (also called C pentane) [4] is a highly flammable alicyclic hydrocarbon with chemical formula C 5 H 10 and CAS number 287-92-3, consisting of a ring of five carbon atoms each bonded with two hydrogen atoms above and below the plane.
Cyclopentanone: Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ...
For instance, the reaction of cyclopentanone with diazomethane forms cyclohexanone (shown below). The Büchner ring expansion reactions utilizing diazoalkanes have proven to be synthetically useful as they can not only be used to form 5- and 6-membered rings, but also more unstable 7- and 8-membered rings. [27]
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It is one of many products from the pyrolysis of lignocellulose. [4]It is used in flavors and perfumery for its maple- or caramel-like odor. [5] It contributes to the flavor or odor of many foods including wines, coffee, paprika, and salmon.
SU-8 3000 series resists also use cyclopentanone for the primary solvent and are designed to be spun into thicker films ranging from 2 to 75 μm in a single coat. [14] SU-8 GLM2060 series of low-stress photoresist consist of epoxy GBL and silica formulation CTE 14. [15] SU-8 GCM3060 Series of GERSTELTEC conductive SU8 with nanoparticles of ...