32700-63-3

Basic information

• Product Name: tetrahydro-2,2,6-trimethyl-2H-pyran
• Synonyms: tetrahydro-2,2,6-trimethyl-2H-pyran;2,2,6-Trimethyltetrahydro-2H-pyran
• CAS NO: 32700-63-3
• Molecular Formula: C₈H₁₆O
• Molecular Weight: 128.21204
• EINECS: 251-163-1
• Mol File: 32700-63-3.mol
• Article Data: 22

Chemical Properties

• Boiling Point: 132.6°Cat760mmHg
• Flash Point: 29.3°C
• Appearance: /
• Density: 0.822g/cm³
• Vapor Pressure: 10.8mmHg at 25°C
• Refractive Index: 1.41
• CAS DataBase Reference: tetrahydro-2,2,6-trimethyl-2H-pyran(CAS DataBase Reference)
• NIST Chemistry Reference: tetrahydro-2,2,6-trimethyl-2H-pyran(32700-63-3)
• EPA Substance Registry System: tetrahydro-2,2,6-trimethyl-2H-pyran(32700-63-3)

Safety Data

• Hazardous Substances Data: 32700-63-3(Hazardous Substances Data)

Usage

InChI:InChI=1/C8H16O/c1-7-5-4-6-8(2,3)9-7/h7H,4-6H2,1-3H3

Upstream product

• 73304-48-0 6-methylheptan-2,6-diol 
• 110-93-0 6-Methyl-hept-5-en-2-on 
• 4630-06-2 6-methylhept-5-en-2-ol 
• 110-86-1 pyridine 
• 7719-09-7 thionyl chloride 
• 10034-85-2 hydrogen iodide 
• 7664-93-9 sulfuric acid 
• 7732-18-5 water 
• 470-59-7 tetrahydro-2,6,6-trimethyl-2H-pyran-2-carboxylic acid 
• 171557-71-4 N-<(6-Methyl-5-heptenyl)-2-oxy>pyridine-2(1H)-thione 

Downstream Products

• 928-68-7 6-methylheptan-2-one 

Relevant articles and documents

Elucidating the Importance of Hydrochloric Acid as a Cocatalyst for Resorcinarene-Capsule-Catalyzed Reactions

This survey of resorcinarene-capsule-catalyzed reactions demonstrates that HCl functions as a crucial cocatalyst by increasing the capsule's inherent Br?nsted acidity to enable or accelerate cationic reactions. The presence of HCl appears to be without consequences for other reactions.

Simple salts of abundant metals (Fe, Bi, and Ti) supported on montmorillonite as efficient and recyclable catalysts for regioselective intramolecular and intermolecular hydroalkoxylation reactions of double bonds and tandem processes

The transfer of catalytic hydroalkoxylation reactions of olefins from homogeneous to heterogeneous conditions has been studied using two types of solid catalysts, namely montmorillonite (MMT) doped with metal cations and metal nanoparticles supported on oxides. In the case of intramolecular reactions, 38-99% yields of cyclic ethers have been obtained using Fe-MMT and Bi-MMT both in CH3NO2 and dimethyl carbonate (DMC) compared with other supported metal salts or metal nanoparticles. In the case of more challenging intermolecular reactions, conversions up to 72% and yields up to 54% were obtained with metal-doped MMT as well, such as Fe-, Bi-, and Ti-MMT. In this paper, we detail the substrate scope and limitations for both classes of reactions and tandem processes, their transposition in flow and some mechanistic insights concerning the active species, in processes identified as truly heterogeneously catalysed. As a general trend, it was observed that trisubstituted double bonds allowed the best results both in intra- and intermolecular reactions. The transfer of homogeneous catalysts onto heterogeneous ones in the case of Fe-MMT and Bi-MMT was successful and even allowed enhanced catalytic activities in the case of Bi-MMT.

Simple metal salts supported on montmorillonite as recyclable catalysts for intramolecular hydroalkoxylation of double bonds in conventional and VOC-exempt solvents

We describe herein an efficient and particularly sustainable catalytic system for the intramolecular hydroalkoxylation of double bonds. A heterogeneous catalyst based on the impregnation of benign metals such as iron and bismuth on montmorillonite was used for a highly atom-economic transformation in DMC, a non-VOC solvent. The transformation allowed the formation of a large range of cyclic ethers from the corresponding unsaturated alcohols and the catalyst could be recycled several times.