![Triphenylphosphine Dibromide](/ProductImageEN/2023-11/Large/baf37601-8683-4f17-929c-c86814dd1792.jpg)
Triphenylphosphine Dibromide NEW
Price | Get Latest Price |
Package | 1kg |
Min. Order: | 1kg |
Supply Ability: | 20 tons |
Update Time: | 2024-08-15 |
Product Details
Product Name: Triphenylphosphine Dibromide | CAS No.: 1034-39-5 |
EC-No.: 213-855-1 | Min. Order: 1kg |
Purity: 0.99 | Supply Ability: 20 tons |
Release date: 2024/08/15 |
use
1. Used as a brominating agent in organic synthesis. Reacting with alcohol and phenol, hydroxyl is replaced into odor, ether is split into dimolecular bromoalkane, ester into acyl bromide, lactone into ωester. Deoxidizer. It forms isonitrile with formamide, and carbodiimide with N,N '1/2 substituted urea. The complex with DMF is used for Vilsmeier formylation reaction. Or make the middle alcohols into formates, make the primary alcohols into bromoalkanes and so on.
2. Dibromotriphenylphosphine was first used in a synthetic reaction in 1959 to prepare bromine and acyl bromide from alcohols and carboxylic acids, respectively, and also in the dehydration reaction of amide and oxime conversion to nitrile. It is now used as a general reagent in many reactions. Dibromotriphenylphosphine reacts with alcohol to first form an alkoxytriphenylphosphine bromide intermediate, which is then slowly decomposed into triphenylphosphine and bromide (Formula 1~)
Formula 3). Synthesis of aryl bromide from phenol By the reaction of triphenylphosphine dibromide with phenol, bromine aromatic compounds can be prepared.
Formula 4). Preparation of bromo-alkenes by reaction with ketones In acetonitrile solvent, the reaction of dibromo-triphenylphosphine with ketones can produce bromo-unsaturated compounds with good yield.
Formula 5). Cyclo-opening reaction of epoxides to o-dibromide In benzene solvents at room temperature, cyclo-opening reaction occurs between epoxides and triphenylphosphine dibromide to form o-dibromide.
Formula 6). Reactions with carboxylic acids, anhydrides and lipids to form acyl bromide Various carboxylic acids and anhydrides react with dibromotriphenylphosphine to produce acyl bromide (
Formula 7). Reaction with nitrogen ring compound to form bromoimide compound tricoordination nitrogen ring compound reacts with dibromotriphenylphosphine, can be opened nitrogen ring to produce bromoimide compound (
Formula 8). Reaction from 6-hydroxycarboline to the corresponding bromoides Reaction of 6-hydroxycarboline with dibromotriphenylphosphine can produce the corresponding bromoides (
Formula 9).
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Express: FedEx, UPS, EMS, DHL, USPS, TNT, DPD, Aramex etc
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The company name and other contents related to pharmacy are not written on the package slips.
The way of packing is regularly changed for a secure delivery.
The packages are small in order to avoid unwelcomed questions . If the order is big, then it will be divided into two or more packages
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YES, we provide tracking number and you can track on internet.
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Yes we can ship to USA/UK/Canada/Australia/Germany etc warehouse first then to you.
Do you ensure your packing , what about customs, what happens if the package is retained?
We concern a lot about our safety system, we pack the orders as secure as possible. If a package is seized at customs, reships of seized orders will be done provided you have a copy of the letter to show us. If you receive a seizure letter, please contact us immediately with a scanned copy of the seizure letter, and also a new address to have your order reshipped to.
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Western Union
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Where do you ship to?
Worldwide.
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- Since: 2020-05-25
- Address: Zhanggeji Village, Fengjiazhai Town, Guangzong County, Xingtai City, Hebei Province
17531190177