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Potassium tert-butanolate
Cas No: 865-47-4
No Data 500 Kilogram Metric Ton/Day Jiangsu Hualin Chemical Co.,Ltd Contact Supplier
Potassium tert-butanolate
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No Data 500 Gram 10 Metric Ton/Month Springchem New Material Technology Co.,Limited Contact Supplier
Specializing in the production of potassium t-butoxide
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No Data No Data Metric Ton/Day Suzhou Feihe Chemical Co. Ltd. Contact Supplier
High purity Potassium tert-butanolate 98% TOP1 supplier in China
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USD $ 1.0-2.0 / Gram 100 Gram 1-1000 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Potassium tert-butanolate CAS NO.865-47-4
Cas No: 865-47-4
USD $ 1.0-3.0 / Metric Ton 1 Metric Ton 10 Metric Ton/Day Hebei yanxi chemical co.,LTD. Contact Supplier
High quality 865-47-4 Potassium tert-butoxide
Cas No: 865-47-4
USD $ 1300.0-1600.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
Fresh In Stock:Potassium Tert-Butoxide with BEST PRICE
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USD $ 1.0-1.0 / Metric Ton 1 Metric Ton 1000 Metric Ton/Day Scale Chemical Corporation Contact Supplier
UIV Chem CAS No 865-47-4 t-BuOK(PTB : Potassium tert butoxide)
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USD $ 30.0-42.0 / Gram 1 Gram 100 Metric Ton/Month Yurui(Shanghai)Chemical Co.,Ltd Contact Supplier
Potassium tert-butanolate
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No Data 1 Kilogram 3000 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
Potassium tert-butanolate -- CHemwill
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865-47-4 Usage

Laboratory method for preparation of potassium tert-butoxide

The potassium metal was added to the freshly distilled tert-butanol under nitrogen atmosphere, refluxed to until the potassium was completely melted. Further incubate for 1 hour. The excess amount of t-butyl alcohol was distilled off with the remaining white solid subjecting to vacuum drying under reduced pressure at 180-190 °C for 10 h. Then we can obtain the crystal powder of potassium tert-butanol. It needs to saved be under the nitrogen atmosphere for using. It should be kept away from air & water, or will become pink. The yield, calculated according to potassium, is more than 99%. The chemical reaction equation for the reaction between tert-butyl alcohol and metal potassium for preparation of potassium tert-butoxide is as follows:
The chemical reaction equation for the reaction between tert-butyl alcohol and metal potassium for preparation of potassium tert-butoxide.

Related chemical reaction

1, Take N-formyl-o-toluidine as raw material, 350~360 °C, have it reacted with potassium tert-butoxide to generate indole. After separation, the indole is further reacted with chloroacetic acid reaction to obtain β-indole acetic acid.
2, β-ring citral is first reacted with acrylic magnesium bromide to have Grignard reaction to generate alcohol, the resulting alcohol is then oxidized into ketone, followed by isomerization using potassium tert-butoxide as a catalyst to become β-ketone.
3, Take citral and allyl Grignard reagents as raw materials for reaction to generate 6, 10-dimethyl-4-hydroxy-1, 5, 9-undecatriene, followed by the oxidation reaction by Collins reagent to generate 6, 10-dimethyl-1,5,9-undecatrien-4-one, which is then subject to isomerization under the action of tert-butanol potassium to generate damascone. The damascone, under the action of Tin chloride or phosphoric acid, can have cyclization to obtain damascenone.
4, Take 2, 6, 6-trimethylcyclohexane-2-alkenyl formaldehyde to have reaction with allyl Grignard agent to generate cyclohexenyl butenol, followed by the oxidation under copper-zinc catalyst to generate cyclohexane alkenyl ketene, followed by isomerization in the alkali solution of potassium tert-butoxide, being able to generate Damascenone.
5, Darzen reaction: aldehydes and ketones, in the presence of alkaline reagents, can have ester-aldol condensation reaction with α-halo acid ester, while having the hydrogen halogen lost, generating α, β-epoxy ester. Common alkaline reagents include sodium ethoxide, sodium amide, sodium metal, potassium tert-butoxide and so on.
6. Stobbe reaction: aldehydes, ketones and succinate ester, in the presence of alkaline catalysts (such as sodium ethoxide, potassium tert-butoxide, sodium chloride, etc.) have reaction similar to the aldol condensation reaction, generating succinate or its monoester with the methylene replaced by hydrocarbon.

Strong alkaline condensing agent

Potassium tert-butoxide is a strong alkaline condensing agent with its alkalinity is stronger than sodium methoxide and sodium ethoxide. At room temperature, this product is white or white-like solid powder with its chemical formula being (CH3) 3C-O-K, molecular weight being 112.21, density being 0.929, the melting point of 256-258 ° C and the boiling point being 275 ° C. It is easy to absorb moisture. It is soluble in tert-butanol with the solution being relative stable, and commonly used in the dehydrohalogenation reaction of halogenated hydrocarbon. Being exposure to air decomposition, it can be decomposed into potassium oxide and tert-butyl alcohol when coming across water. It can be manufactured through the reaction between butanol and potassium, followed by the vacuum distillation of tert-butanol in the system.
It is widely used the condensation reaction, rearrangement and ring-opening reaction in organic synthesis. People generally apply tert-butanol solution. Potassium tert-butoxide is a kind of organic alkaline corrosion products with strong moisture absorption property and should be sealed for storage. We need to pay attention to prevention of fire and sunshine during the storage and transportation. It should be stored in a cool, ventilated and dry place.

Uses

It can be used in pesticides, pharmaceuticals, printing and dyeing, catalysts and so on
Potassium tert-butoxide, as a strong alkaline, is widely used in the condensation, rearrangement and ring opening reaction in organic production in the fields of chemical, pharmaceutical and pesticide.

Precautions

Potassium tert-butoxide has two types, liquid and solid. Usually the liquid industrial product is the tert-butanol solution of tert-butanol potassium with the color of the product being light yellow or milky white, being slightly turbid, in which the content of potassium tert-butoxide being 10% to 12%; the solid product is generally white or white powder in which the potassium tert-butoxide content is 95% to 97%.
Potassium tert-butoxide is organic alkaline corrosion product with strong moisture absorption property. It should be generally sealed for storage, generally stored in a cool, dry, ventilated warehouse. It should be kept away from heat and isolated from fire isolation as well as being protected from sun exposure. Potassium tert-butoxide has a strong corrosive effect on the skin. During the handling and loading process, the operator should wear a protective mask to prevent corrosion and burning by potassium tert-butoxide.
The above information is edited by Tongtong from Chemicalbook.

Uses

Usually used for greener amidation of esters.

Strong organic alkaline

Potassium tert-butoxide is an important kind of organic base with its alkalinity being stronger than potassium hydroxide. Because of the induction effect of three methyl groups in the (CH3) 3CO-, it has stronger alkalinity and activity than other potassium alkoxides, thus being a very excellent catalyst. In addition, as a kind of strong alkaline, potassium tert-butoxide is widely used in the organic synthesis of chemical, pharmaceutical, and pesticide such as trans-esterification, condensation, rearrangement, polymerization, loop opening and the production of heavy metal orthoester. It can be used to catalyze the Michael addition reaction, Pinacol rearrangement reaction and Ramberg-Backlund rearrangement reaction. Potassium tert-butoxide is used as a condensing agent, which can be used to catalyze Darzens condensation reaction and Stobbe condensation reaction. It is also the most effective alkaline for traditional akloxide-haloform reaction generating dihalogenated carbene. Therefore, potassium tert-butoxide has attracted more and more attention from chemical, pharmaceutical, pesticide and other industries. As potassium tert-butoxide has such a wide application, the domestic and international demand for high purity potassium tert-butoxide is very large. However, due to its production cost is higher than other alkali metal alkoxides, the production technology needs to be improved, so in-depth study of potassium tert-butoxide is particularly important.

Chemical Properties

white crystalline powder

Purification Methods

It sublimes at 220o/1mm. The last traces of tert-BuOH are removed by heating at 150-160o/2mm for 1hour. It is best prepared afresh as likely impurities are tert-BuOH, KOH and K2CO3 depending on its exposure to air. Its solubility at 25-26o in hexane, toluene, Et2O, and THF is 0.27%, 2.27%, 4.34% and 25.0%, respectively. [Feuer et.al. J Am Chem Soc 78 4364, Doering & Urban J Am Chem Soc 78 5938 1956, Beilstein 1 IV 1612.]
InChI:InChI=1/C4H10O.K/c1-4(2,3)5;/h5H,1-3H3;/q;+1

865-47-4 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (328650)  Potassiumtert-butoxidesolution  1.0 M in THF 865-47-4 328650-2L 8,599.50CNY Detail
Aldrich (328650)  Potassiumtert-butoxidesolution  1.0 M in THF 865-47-4 328650-500ML 2,943.72CNY Detail
Aldrich (328650)  Potassiumtert-butoxidesolution  1.0 M in THF 865-47-4 328650-50ML 696.15CNY Detail
Aldrich (659878)  Potassiumtert-butoxide  sublimed grade, 99.99% trace metals basis 865-47-4 659878-25G 1,993.68CNY Detail
Aldrich (659878)  Potassiumtert-butoxide  sublimed grade, 99.99% trace metals basis 865-47-4 659878-5G 607.23CNY Detail
Aldrich (156671)  Potassiumtert-butoxide  reagent grade, ≥98% 865-47-4 156671-2.5KG 5,692.05CNY Detail
Aldrich (156671)  Potassiumtert-butoxide  reagent grade, ≥98% 865-47-4 156671-500G 1,647.36CNY Detail
Aldrich (156671)  Potassiumtert-butoxide  reagent grade, ≥98% 865-47-4 156671-100G 696.15CNY Detail
Aldrich (156671)  Potassiumtert-butoxide  reagent grade, ≥98% 865-47-4 156671-25G 510.12CNY Detail
Aldrich (156671)  Potassiumtert-butoxide  reagent grade, ≥98% 865-47-4 156671-5G 503.10CNY Detail
Alfa Aesar (A13947)  Potassium tert-butoxide, 97%    865-47-4 1000g 1590.0CNY Detail
Alfa Aesar (A13947)  Potassium tert-butoxide, 97%    865-47-4 500g 883.0CNY Detail

865-47-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Potassium tert-butanolate

1.2 Other means of identification

Product number -
Other names potassium,2-methylpropan-2-olate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Intermediates,Laboratory chemicals
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:865-47-4 SDS

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