4065-92-3

Basic information

• Product Name: 1,2-Cyclopentanediol
• Synonyms: 1,2-Cyclopentandiol
• CAS NO: 4065-92-3
• Molecular Formula: C₅H₁₀O₂
• Molecular Weight: 102.1317
• Mol File: 4065-92-3.mol
• Article Data: 32

Chemical Properties

• Appearance: /
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 1,2-Cyclopentanediol(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Cyclopentanediol(4065-92-3)
• EPA Substance Registry System: 1,2-Cyclopentanediol(4065-92-3)

Safety Data

• Hazardous Substances Data: 4065-92-3(Hazardous Substances Data)

Usage

General Description

1,2-Cyclopentanediol is a cyclic diol compound with the molecular formula C5H10O2. It is a colorless, odorless liquid that is soluble in water and ethanol. 1,2-Cyclopentanediol is primarily used as a building block in the synthesis of various chemicals and pharmaceuticals. It is also used as a solvent in some chemical reactions and as an intermediate in the production of fragrances and flavors. The compound has potential applications in the fields of polymer science and material chemistry due to its ability to form complex organic molecules. However, it is important to handle 1,2-Cyclopentanediol with caution as it can cause irritation to the skin and eyes upon contact.

Upstream product

• 29974-65-0 1,2-dibromo-cyclopentane 
• 285-67-6 Cyclopentene oxide 
• 64-19-7 acetic acid 
• 142-29-0 cyclopentene 
• 67-56-1 methanol 
• 64-17-5 ethanol 
• 75-65-0 tert-butyl alcohol 
• 933-06-2 1-acetoxycyclopentene 
• 124-38-9 carbon dioxide 
• 285-67-6 (1S,5R)-6-Oxa-bicyclo[3.1.0]hexane 
• 7732-18-5 water 
• 67-63-0 isopropyl alcohol 

Downstream Products

• 110-94-1 1,5-pentanedioic acid 
• 287-92-3 Cyclopentane 
• 1453267-32-7 2-(methoxymethoxy)cyclopentanol 
• 101836-57-1 2-(benzyloxy)cyclopentanol 
• 1453267-34-9 methyl 2-(benzyloxy)-1-((tert-butoxycarbonyl)amino)cyclopentanecarboxylate 
• 1244671-74-6 2-(benzyloxy)-1-((tert-butoxycarbonyl)amino)cyclopentanecarboxylic acid 
• 1244671-71-3 6-(benzyloxy)-1,3-diazaspiro[4.4]nonane-2,4-dione 
• 1453266-72-2 2-chloro-4-((5S,6R)-6-hydroxy-2,4-dioxo-1-oxa-3-azaspiro[4.4]nonan-3-yl)-3-methylbenzonitrile 
• 1453266-73-3 2-chloro-4-((5R,6S)-6-hydroxy-2,4-dioxo-1-oxa-3-azaspiro[4.4]nonan-3-yl)-3-methylbenzonitrile 
• 1453266-74-4 2-chloro-4-((5S,6S)-6-hydroxy-2,4-dioxo-1-oxa-3-azaspiro[4.4]nonan-3-yl)-3-methylbenzonitrile 
• 1453266-75-5 2-chloro-4-((5R,6R)-6-hydroxy-2,4-dioxo-1-oxa-3-azaspiro[4.4]nonan-3-yl)-3-methylbenzonitrile 
• 1453267-89-4 1-cyano-2-(methoxymethoxy)cyclopentyl (3-chloro-4-cyano-2-methylphenyl)carbamate 
• 1453267-26-9 2-chloro-4-(6-hydroxy-1-methyl-2-oxo-1,3-diazaspiro[4.4]nonan-3-yl)-3-methylbenzonitrile 
• 1453267-85-0 3-(3-chloro-4-cyano-2-methylphenyl)-1-methyl-2-oxo-1,3-diazaspiro[4.4]nonan-6-yl acetate 

Relevant articles and documents

The kinetics of the reaction between cyclopentene and aqueous hydrogen peroxide under phase-transfer catalysis

The kinetics of the reaction between cyclopentene and an aqueous solution of hydrogen peroxide under phase-transfer catalysis conditions has been studied. The activation energies of the successive stages of cyclopentene epoxidation to 1,2-epoxycyclopentane and the hydration of the resulting epoxide to 1,2-cyclopentanediol have been found, and the orders of the reactions with respect to the reactants have been determined. A mathematical model of the process that adequately describes the available experimental data in the entire range of reactant concentrations has been proposed.

Tandem Lewis acid catalysis for the conversion of alkenes to 1,2-diols in the confined space of bifunctional TiSn-Beta zeolite

The generation of multifunctional isolated active sites in zeolite supports is an attractive method for integrating multistep sequential reactions into a single-pass tandem catalytic reaction. In this study, bifunctional TiSn-Beta zeolite was prepared by a simple and scalable post-synthesis approach, and it was utilized as an efficient heterogeneous catalyst for the tandem conversion of alkenes to 1,2-diols. The isolated Ti and Sn Lewis acid sites within the TiSn-Beta zeolite can efficiently integrate alkene epoxidation and epoxide hydration in tandem in a zeolite microreactor to achieve one-step conversion of alkenes to 1,2-diols with a high selectivity of >90%. Zeolite confinement effects result in high tandem rates of alkene epoxidation and epoxide hydration as well as high selectivity toward the desired product. Further, the novel method demonstrated herein can be employed to other tandem catalytic reactions for sustainable chemical production.

Understanding the mechanism of N coordination on framework Ti of Ti-BEA zeolite and its promoting effect on alkene epoxidation reaction

The function of ammonium salts on the epoxidation performance over Ti-BEA zeolite was investigated in detail. Experiments of alkene epoxidation, side reactions of epoxide and decomposition of H2O2 with or without ammonium salts were designed, and the UV-Vis spectroscopy was employed to analyze the structure of Ti-hydroperoxo species. It is revealed that the ammonia (or amines) dissociated from the ammonium salt would chelate with the linear Ti-η1(OOH) species and form a bridged Ti-η2(OOH)-R species, which is more stable, more weaker in epoxide adsorption and acidity as well. Therefore, side reactions and H2O2 decomposition would be suppressed, and both alkene conversion and epoxide selectivity would be promoted simultaneously. On the other hand, the excessive NH3?H2O (NH3/Ti>1) or NaOH bond with the Ti-η2(OOH)-R species and generate salt-like Ti-η2(OO)-M+ species, resulting in the deactivation of Ti active center. While for ammonium salts, e.g. NH4Cl, the limited dissociation degree along with the acidic environment help the Ti active center to maintain in highly active. In short, this work provides a practical Ti active center tuning method for Ti-BEA zeolite, as well as a thorough understanding of its Ti-hydroperoxo species.