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19311-37-6

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19311-37-6 Usage

General Description

3-Bromotetrahydrofuran, also known as 3-bromo-THF, is a chemical compound with the molecular formula C4H7BrO. It is a colorless liquid with a faint, sweet odor, and it is commonly used as a solvent and as a reagent in organic synthesis. 3-Bromotetrahydrofuran is a derivative of tetrahydrofuran, with a bromine atom attached to the third carbon atom of the ring. It is often used in the pharmaceutical and chemical industries as a building block for the synthesis of various compounds. 3-Bromotetrahydrofuran is considered to be flammable and should be handled and stored with care. Additionally, it may be harmful if swallowed, inhaled, or absorbed through the skin, and appropriate precautions should be taken when working with it.

Check Digit Verification of cas no

The CAS Registry Mumber 19311-37-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,1 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19311-37:
(7*1)+(6*9)+(5*3)+(4*1)+(3*1)+(2*3)+(1*7)=96
96 % 10 = 6
So 19311-37-6 is a valid CAS Registry Number.
InChI:InChI=1/C4H7BrO/c5-4-1-2-6-3-4/h4H,1-3H2

19311-37-6SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-bromooxolane

1.2 Other means of identification

Product number -
Other names 3-BROMOTETRAHYDROFURAN

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:19311-37-6 SDS

19311-37-6Relevant articles and documents

Bromination of alkenols with the H2O2 - LiBr - CeIII and H2O2 - LiBr - CeIV systems

Nikishin,Sokova,Kapustina

, p. 459 - 463 (2012)

Reactions of alkenols with H2O2 - LiBr - Ce(NO 3)3·6H2O or H2O2 - LiBr - Ce(NH4)2(NO3)6 system led to bromination of the double bond to yield vicinal dibromoalkanols. The reaction proceeded highly selectively, no oxidation of the hydroxyl group virtually occurred.

A 3 - halogenated tetrahydrofuran preparation method

-

Paragraph 0038; 0039, (2019/05/28)

The invention discloses a 3 - halogenated tetrahydrofuran preparation method. The method comprises the following steps: in the organic solvent, 0 - 85 °C temperature, shown in formula I compound with a reducing agent, can be; wherein R1 And R2 The same, they are selected from chlorine or bromine; the reducing agent is sodium borohydride or potassium borohydride; wherein the organic solvent is b [...], 2 - chloroethyl methyl ether, ethyl ether, tetrahydrofuran or methyl tetrahydrofuran. The method of the invention less reaction steps, the process is simple, the product yield can reach 80% - 95%, and the low cost of raw materials, equipment investment, the price of the product there are advantages; in addition the method pollution is small, friendly to the environment, and is suitable for large-scale industrial production.

Br+ and I+ transfer from the halonium ions of adamantylideneadamantane to acceptor olefins. Halocyclization of 1,ω-alkenols and alkenoic acids proceeds via reversibly formed intermediates

Neverov,Brown

, p. 962 - 968 (2007/10/03)

The kinetics of the transfer of X+ from the bromonium and iodonium ions of adamantylideneadamantane (1-Br+ and 1-I+) to some 1,ω-alkenols and alkenoic acids in ClCH2CH2Cl at 25°C was investigated. In all cases, the expected products of halocyclization were observed. For the iodonium ion transfer the reaction kinetics are second order overall, first order in both 1-I+ and acceptor olefin. Transfer of the bromonium ion from 1-Br+ to these acceptor olefins exhibits different kinetic characteristics. In most cases, the rate of the Br+ transfer is subject to strong retardation in the presence of added parent olefin (Ad=Ad), suggestive of a common species rate depression. In some cases, such as 4-penten-1-ol (2b) and 4-pentenoic acid (4b), the reaction can be completely suppressed at high [Ad=Ad]. In other cases, such as 3-buten-1-ol (2a), 5-hexen-1-ol (2c), cyclohexene, 4-(hydroxymethyl)cyclohexene (3), and 5-endo-carboxynorbornene (5), added Ad=Ad does not suppress the reaction completely. In the cases of the 1,ω-alkenols, the reactions appear to exhibit kinetic terms that are greater than first order in alkenol. In these cases, alcohols such as 1-pentanol also accelerate the reaction, pointing to the involvement of the hydroxyl group of the second alkenol as a catalytic species. A unifying mechanism consistent with the data that involves two reversibly formed intermediates is presented.

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