3857-14-5

Basic information

• Product Name: 2-ethyltetrahydro-2H-pyran
• Synonyms: 2-Ethyltetrahydro-2H-pyran; 2H-pyran, 2-ethyltetrahydro-
• CAS NO: 3857-14-5
• Molecular Formula: C₇H₁₄O
• Molecular Weight: 114.1855
• Mol File: 3857-14-5.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 135.7°C at 760 mmHg
• Flash Point: 27.2°C
• Density: 0.845g/cm³
• Vapor Pressure: 9.45mmHg at 25°C
• Refractive Index: 1.417
• CAS DataBase Reference: 2-ethyltetrahydro-2H-pyran(CAS DataBase Reference)
• NIST Chemistry Reference: 2-ethyltetrahydro-2H-pyran(3857-14-5)
• EPA Substance Registry System: 2-ethyltetrahydro-2H-pyran(3857-14-5)

Safety Data

• Hazardous Substances Data: 3857-14-5(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 76928-53-5 (+/-)-2-cyanoterahydropyran 
• 171557-95-2 Toluene-4-sulfonic acid 1-ethyl-pent-4-enyl ester 
• 19781-77-2 hept-6-en-3-ol 
• 171557-64-5 N-(6-Heptenyl-3-oxy)pyridine-2(1H)-thione 
• 52426-83-2 2-vinyltetrahydro-2H-pyran 
• 5631-95-8 2,3-dichlorotetrahydro-2H-pyran 
• 74-96-4 ethyl bromide 
• 110-87-2 3,4-dihydro-2H-pyran 

Downstream Products

• 1622-10-2 1,5-dibromoheptane 

Relevant articles and documents

Catalytic synthesis of oxygenate from alcohol

The present invention discloses a method for catalytic synthesis of oxygenate from alcohol. At first, a feeding material comprising at least one alcohol is provided. Next, a copper-containing catalyst is provided and the catalyst further comprises at least one metal element selected from the group consisting of the following: zinc, magnesium, and aluminum elements. Following that, a catalytic reaction of the feeding material over the copper-containing catalyst is carried out to synthesize at least one oxygenate.

β-Halogeno Ether Synthesis of Olefinic Alcohols: Stereochemistry and Conformation of 2-Substituted 3-Halogenotetrahydro-pyran and furan Precursors

Ring-scission of cis- or trans-2-alkyl- (or aryl-) 3-chlorotetrahydropyrans proceeds regioselectively and highly stereoselectively to give (E)-alk-4-en-1-ols, but in the parallel tetrahydrofuran series (Z)-/(E)-mixtures, dependent on percursor geometry, are formed.In this paper the stereochemistry and conformation of the tetrahydro-pyran and - furan precursors are considered.The cis/trans-composition of 2,3-dihalogenotetrahydro-pyrans and-furans made by various routes is reported.Reaction with Grignard reagents gives separable cis-/trans-mixtures the stereoisomeric composition of which, in the cases examined, does not depend on the stereoisomeric composition of the dihalide, but does vary with the halogen and the composition of the Grignard or dialkylmagnesium; possible reasons are discussed.The stereochemistry and conformation of the 2-alkyl- (or aryl-)3-chlorotetrahydropyrans is analysed by n.m.r. methods (J2a,3acis ca. 1.5 Hz; J2a,3atrans ca. 9.8 Hz) but assignments for the two tetrahydrofuran series with J2,3 2.6-3.6 and 4.3-5.9 are made uncertain by pseudorotation.The stereochemical identity of the two series is rigorously proved by isolation of cis- and trans-2-allyl-3-chlorotetrahydrofuran.On the one hand the former is hydrogenated to the cis-2-propyl compound, correlated with other members of the alkyl series, but on the other it is oxidised and the acid is converted into the cis-p-bromophenyl ester.The stereochemistry and conformation of the latter is rigorously demonstrated by an X-ray structure.The stereochemistries and conformations of the 2-deuterio- and 2-methoxy-3-chlorotetrahydropyrans are discussed, and consideration is then extended to the 2-alkyl-3-chloro-2-methyltetrahydro-pyran and -furan series.