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3174-74-1

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3174-74-1 Usage

Uses

3,6-Dihydro-2H-pyran is a reactant used in epoxide formation reactions involved in the synthesis of pharmaceuticals.

Check Digit Verification of cas no

The CAS Registry Mumber 3174-74-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,7 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3174-74:
(6*3)+(5*1)+(4*7)+(3*4)+(2*7)+(1*4)=81
81 % 10 = 1
So 3174-74-1 is a valid CAS Registry Number.
InChI:InChI=1/C5H8O/c1-2-4-6-5-3-1/h1-2H,3-5H2

3174-74-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 3,6-dihydro-2H-pyran

1.2 Other means of identification

Product number -
Other names 3,6-Dihydro-2H-pyran

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:3174-74-1 SDS

3174-74-1Relevant articles and documents

Tetrahydro-4 H-pyran-4-one: From the Laboratory Scale to Pilot Plant Manufacture

Zahim, Sara,Delacroix, Kenny,Carlier, Agathe,Berranger, Thierry,Bergraser, Julie,Echeverria, Pierre-Georges,Petit, Laurent

, p. 199 - 206 (2022/01/12)

This study describes our recent efforts to find an efficient and scalable route to tetrahydro-4H-pyran-4-one using the commercially available starting materials. The route scouting work and the full development of an efficient access to the target are described. This work culminated in the preparation of above 20 kg of the title compound in our pilot plant facility.

Zeolite-Catalyzed Formaldehyde–Propylene Prins Condensation

Vasiliadou, Efterpi S.,Gould, Nicholas S.,Lobo, Raul F.

, p. 4417 - 4425 (2017/11/20)

Prins condensation of formaldehyde with propylene to form 3-buten-1-ol is investigated using microporous solid acid catalysts. Zn/H-beta shows high conversion but leads to a broad product distribution composed primarily of pyrans. Mechanistic studies revealed that 3-buten-1-ol reacts via Prins cyclization or dehydrate to 1,3-butadiene that further reacts with formaldehyde via a hetero-Diels–Alder reaction. These secondary reactions are suppressed over ZSM-5 catalysts: 3-buten-1-ol is the predominant product over H-ZSM-5 zeolite under all conditions investigated. 3-Buten-1-ol selectivity of up to 75 % is achieved. In a second step 3-buten-1-ol dehydrates at temperatures as low as 423 K, forming 1,3-butadiene. Although Br?nsted acid sites are the primary catalytic sites, ion exchange of ZnII increases the overall rate and 3-buten-1-ol selectivity. H-ZSM-5 showed significant differences in reactivity and selectivity as a function of the Si/Al ratio; optimal catalytic properties were observed within Si/Al=40–140.

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