 Home > Chemicals Industry > Chemical Technology > Oxidation method for preparing benzaldehyde from benzoic acid

Oxidation method for preparing benzaldehyde from benzoic acid

 Last Update: 2021-12-07
 Source: Internet
 Author: User

Tags

calcium carbonate sources

separating salt water

Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com

(3) Benzaldehyde oxidation method

Add 50mmol benzaldehyde into a 50mL Erlenmeyer flask , and add a certain amount of Na ₂ WO ₄ ·2H ₂ O (as a catalyst) and NaHSO ₄ ·H ₂ O (the ratio of the two substances is 1:1), and magnetically stir.

Substitution of NaHSO ₄ ·H ₂ O with non-ionic surfactants can increase the yield.

The reaction equation is as follows:

(4) Phthalic anhydride heating decarboxylation method

This method can be divided into liquid phase method and gas phase method

(5) Benzyl halide oxidation method

Using benzyl halide as raw material and KMnO ₄ as oxidant, benzoic acid can also be prepared:

A 150mL conical flask was charged with 1g anhydrous sodium carbonate , 2.

(6) Household bleaching powder oxidation method

Put 350mL of bleach (0.

The water phase is cooled with ice, and 3mol/L H2SO4 is added until the solution becomes acidic, and a white precipitate of benzoic acid is obtained .

(7) Electrochemical synthesis method

Using chlorobenzene and CO ₂ as raw materials, N,N-dimethylformamide as the solvent, aluminum as the sacrificial anode, and stainless steel as the cathode, benzoic acid is prepared by electrochemical carboxylation in a non-diaphragm electrolytic cell at a water bath temperature of 5°C.

Related links: Benzyl alcohol oxidation method for the preparation of benzoic acid

This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Products

polyether polyol for conventional soft foam, Cas No.: 9082-00-2, MW 3500

CAS No.: 9082-00-2

Industrial Grade

$1200.00/MT FOB

Best Wholesale Polymaleic acid 99%

CAS No.: 26099-09-2

Food Grade

$1-1.2/MT FOB

Wholesale Polymaleic acid 99%

CAS No.: 26099-09-2

Food Grade

$1-1.2/MT FOB

Hot Tags

united states jobs(223)

jobs united states(236)

1 year treasury(277)

1 year subscription(296)

single use technology(195)

announcements today(81)

ups united states(221)

80 20 company(94)

united states logo(227)

healthy food name(42)

Hot Articles

The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.