cas 614-45-9, tert-Butyl peroxybenzoate | Articles data

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Immobilization of (l)-valine and (l)-valinol on SBA-15 nanoporous silica and their application as chiral heterogeneous ligands in the Cu-catalyzed asymmetric allylic oxidation of alkenes
SBA-15 nanoporous silica was synthesized by hydrothermal method using P123 surfactant and tetraethoxyortosilicate in acidic condition and then functionalized by 3-chloropropyltrimethoxysilane. Next, by immobilization of chiral amino acid (S)-2-amino-3-methyl butanoic acid (l-valine) and chiral amino alcohol (S)-2-amino-3-methylbutane-1-ol (l-valinol), preparedviathe reduction ofl-valine by NaBH4/I2in THF, on functionalized-SBA-15, chiral heterogeneous ligands AL*-i-Pr-SBA-15 and AA*-i-Pr-SBA-15 were prepared and characterized by FT-IR, XRD, TGA, EDX, SEM, BET-BJH techniques. The asymmetric allylic oxidation of alkenes was done using copper-complexes of these ligands and the as-synthesized peresters. The reactions were optimized by varying various parameters such as temperature, solvent, amount of chiral heterogeneous ligand, as well as the type and amount of copper salt. Under optimized conditions, 6 mg of AL*-i-Pr-SBA-15 and 3.2 mol% of Cu(CH3CN)4PF6in acetonitrile at 50 °C, the chiral allylic ester was obtained with 80% yield and 39% enantiomeric excess in 24 h. The recyclability of the chiral heterogeneous catalysts was also evaluated without significant reduction in the reaction results up to three runs.
Ashouri, Akram,Mahramasrar, Mahsa,Majidian, Shiva,Rashid, Hersh I,Samadi, Saadi
supporting information
p. 17630 - 17641
(2021/10/04)

2-Aminopyrazine-functionalized MCM-41 nanoporous silica as a new efficient heterogeneous ligand for Cu-catalyzed allylic C–H bonds oxidation of olefins
In spite of the importance of the application of allylic C–H bond oxidation of olefins in organic synthesis and existence of the numerous reports, lots of limitations such as large excess of the olefin respect to the oxidant, low chemical yield, long time of reaction and a large amount of the catalyst were reminded. We introduced a novel catalytic system using functionalized MCM-41 as catalyst support to promote efficiency of this reaction. The heterogeneous ligand Pyr-MCM-41 was prepared by substituted 2-aminopyrazine ligand on functionalized MCM-41 with 3-chloropropyltrimthoxysilane and characterized by FT-IR, XRD, SEM, EDX, BET, TGA, CHN techniques. In situ immobilized Pyr-MCM-41 by copper (I) trifluoromethanesulfonate (CuOTf) was applied in direct catalytic esterification of inert C–H bonds in olefins using various peresters at room temperature.
Samadi, Saadi,Ashouri, Akram,Kamangar, Shadi,Pourakbari, Fatemeh
p. 557 - 569
(2019/11/03)

Preparation method of tert-butyl peroxybenzoate
The invention discloses a preparation method of tert-butyl peroxybenzoate, specifically comprising the following steps of: salifying tert-butyl hydroperoxide and caustic soda liquid; then dropwise adding benzoyl chloride into sodium tert-butoxide peroxide for coupling, and washing a coupling product twice after liquid separation; and adding a stabilizer into the product, drying, dewatering and carrying out suction filtration to obtain the tert-butyl peroxybenzoate product. The preparation method comprises the following steps of: dropwise adding benzoyl chloride into sodium tert-butoxide peroxide; and after liquid separation, washing with water twice, adding a stabilizer into the upper product phase, adding anhydrous magnesium sulfate for drying, and carrying out suction filtration to obtain tert-butyl peroxybenzoate with the yield of not less than 95% and the content of not less than 99%, so that the product can be stored in a dark place and transported for a long distance.
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Paragraph 0027-0036

(2020/11/05)

Sunlight assisted solvent free synthesis of tert-butylperesters
A green and efficient methodology has been developed for the direct conversion of aryl aldehydes to the corresponding tert-butyl peresters. The reaction has been carried out in absence of any solvent and the sunlight is used as the green source of energy. In this reaction tetrabutylammonium iodide (TBAI) acts as the mild organo catalyst and tert-butyl hydroperoxide (TBHP) serve as the source of tert-butyl group.
Shit, Prasenjit,Singha, Raju
supporting information
p. 1 - 6
(2020/07/15)

A Woven Supramolecular Metal-Organic Framework Comprising a Ruthenium Bis(terpyridine) Complex and Cucurbit[8]uril: Enhanced Catalytic Activity toward Alcohol Oxidation
The self-assembly of a diamondoid woven supramolecular metal–organic framework wSMOF-1 has been achieved from intertwined [Ru(tpy)2]2+ (tpy=2,2′,6′,2′′-terpyridine) complex M1 and cucurbit[8]uril (CB[8]) in water, where the intermolecular dimers formed by the appended aromatic arms of M1 are encapsulated in CB[8]. wSMOF-1 exhibits ordered pore periodicity in both water and the solid state, as confirmed by a combination of 1H NMR spectroscopy, UV-vis absorption, isothermal titration calorimetry, dynamic light scattering, small angle X-ray scattering and selected area electron diffraction experiments. The woven framework has a pore aperture of 2.1 nm, which allows for the free access of both secondary and primary alcohols and tert-butyl hydroperoxide (TBHP). Compared with the control molecule [Ru(tpy)2]Cl2, the [Ru(tpy)2]2+ unit of wSMOF-1 exhibits a remarkably higher heterogeneous catalysis activity for the oxidation of alcohols by TBHP in n-hexane. For the oxidation of 1-phenylethan-1-ol, the yield of acetophenone was increased from 10 percent to 95 percent.
Li, Zhan-Ting,Liu, Yi,Wang, Hui,Wang, Ze-Kun,Xu, Zi-Yue,Zhang, Dan-Wei,Zhang, Yun-Chang
p. 1498 - 1503
(2020/08/05)

Decarboxylative Borylation of mCPBA-Activated Aliphatic Acids
A decarboxylative borylation of aliphatic acids for the synthesis of a variety of alkylboronates has been developed by mixing m-chloroperoxybenzoic acid (mCPBA)-activated fatty acids with bis(catecholato)diboron in N,N-dimethylformamide (DMF) at room temperature. A radical chain process is involved in the reaction which initiates from the B-B bond homolysis followed by the radical transfer from the boron atom to the carbon atom with subsequent decarboxylation and borylation.
Wei, Dian,Liu, Tu-Ming,Zhou, Bo,Han, Bing
supporting information
p. 234 - 238
(2020/01/02)

DECOMPOSITION OF ORGANIC PEROXIDES AND HYDROGEN PEROXIDE BY THE IRON THIOLATES AND RELATED COMPLEXES
Disclosed herein is a method of reducing or disproportionating peroxide, comprising combining an organic chalcogenide, an iron salt, and the peroxide in the presence of an additional reductant, which can be the organic chalcogenide. The method can be used to, e.g., prepare alcohols from peroxides and to disproportionate hydrogen peroxide into water and oxygen.
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Paragraph 0725; 0733; 0746-0747

(2020/07/04)

Microfluidic Synthesis of tert-Butyl Peresters via KI-Catalyzed Oxidative Coupling of Methyl Arenes and tert-Butyl Hydroperoxide
A green and efficient organic-aqueous two-phase reaction route for the synthesis of tert-butyl peresters by KI-catalyzed C-H oxidation of methyl arenes in a microfluidic chip reactor has been developed. Moreover, a series of tert-butyl perester products were obtained in moderate to good yields under metal-free conditions. A scale-up continuous flow system was constructed to verify the application of this method.
Hua, Jiawei,Guo, Shiyu,Yang, Zhao,Fang, Zheng,Guo, Kai
supporting information
p. 1633 - 1637
(2017/10/25)

Dirhodium(II)-Catalyzed Carbonylation Peroxidation of α,β-Unsaturated Esters: Mechanistic Insight into the Role of Aryl Aldehydes
Peroxidation has received considerable attention as a synthetically useful method used to prepare organic peroxides, which are useful synthetic building blocks in synthetic chemistry. The difunctionalization of alkenes to introduce a peroxide and another functional group has become a useful tool for quickly increasing molecular complexity in synthesis. In this work, a three-component oxidative coupling of aryl aldehydes with α,β-unsaturated esters and tert-butyl hydroperoxide catalyzed by dirhodium(II) catalyst Rh2(esp)2 (esp = α,α,α′,α′-tetramethyl-1,3-benzenedipropanoate) under mild conditions is developed. The synthesized carbonylation peroxidation products (β-peroxyketones) are stable enough to be isolated by silica gel column and characterized. The β-peroxyketones used as reactants have been applied to the synthesis of the epoxides, polysubstituted furans, carbazole alkaloids, and biologically important natural products. Interestingly, besides being a reactant, aryl aldehydes also play an important role in avoiding the catalyst deactivation during the reaction as shown by ultraviolet/visible analysis. The excess amount of aldehydes was used to ensure the stability of the Rh2(esp)2 catalyst in the reaction by forming the monoaldehyde ligated dirhodium(II) complex. It is important to note that the aldehydes were also found to reduce the inactive Rh2(esp)2Cl species generated in the reaction.
Zhao, Lili,Wang, Yi,Ma, Ziling,Wang, Yuanhua
p. 8166 - 8174
(2017/07/22)

Temperature-controlled solvent-free selective synthesis of tert-butyl peresters or acids from benzyl cyanides in the presence of the TBHP/Cu(OAc)2 system
Solvent-free room temperature synthesis of tert-butyl peresters was achieved via copper-catalyzed oxidative-coupling of benzyl cyanides with tert-butyl hydroperoxide in short reaction times. Various derivatives of tert-butyl peresters were synthesized by this pathway in good to excellent yields. Further investigation revealed that the above-mentioned protocol is effective for the synthesis of benzoic acid derivatives when the reaction is conducted at 80?°C, under the same reaction conditions.
Hashemi,Saberi,Poorsadeghi,Niknam
p. 7619 - 7622
(2017/02/05)

Bu4NI-catalyzed construction of tert-butyl peresters from alcohols
A new method for the synthesis of tert-butyl peresters directly from available alcohols catalyzed by Bu4NI at room temperature in an aqueous system was developed. Additionally, allylic esters could also be obtained by combing this method and Kharasch-Sosnovsky reaction via a two-step one-pot procedure.
Zhang, Hui,Dong, Dao-Qing,Hao, Shuang-Hong,Wang, Zu-Li
p. 8465 - 8468
(2016/02/09)

Cobalt aluminate nanoparticles supported on MIL-101 structure: Catalytic performance investigation
The first catalytic active composites based on CoAl2O4 nanoparticles with different size (5.5 and 2.5 nm) were successfully prepared using a simple methodology of incorporation into MIL-101(Cr) framework, CoAl-x@MIL(Cr). Characterization of CoAl-x@MIL(Cr) composites by elemental analysis, vibrational spectroscopy (FT-IR and FT-Raman), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) confirmed the successful preparation and stability of the support structure after nanoparticle immobilization. A remarkable catalytic performance was found for thioanisole oxidation under sustainable conditions (95% of conversion after 30 min of reaction) and the catalytic application of the most active composite was extended to styrene oxidation. Higher catalytic performance was achieved for the composite prepared with larger CoAl2O4 nanoparticles. The recyclability and the stability of composites after catalytic use were investigated. For the CoAl-x@MIL(Cr) catalytic systems, the loading parameter instead of the nanoparticle size seemed to have a pronounced influence in the heterogeneous catalytic performance. The confinement effect promoted by MIL-101(Cr) cavities associated to the higher number of catalytic active centers (CoAl2O4) is clearly more important than the size of the catalytic nanoparticles used.
Granadeiro, Carlos M.,Karmaoui, Mohamed,Correia, Eva,Julio, Diana,Amaral, Vitor S.,Silva, Nuno J. O.,Cunha-Silva, Lus,Balula, Salete S.
p. 4175 - 4183
(2015/02/19)

Visible-Light-Promoted Photoredox Syntheses of α,β-Epoxy Ketones from Styrenes and Benzaldehydes under Alkaline Conditions
A range of styrenes and benzaldehydes were smoothly combined to form α,β-epoxy ketones under the synergistic actions of photocatalyst Ru(bpy)3Cl2, tert-butyl hydroperoxide (t-BuOOH), cesium carbonate (Cs2CO3), and visible light irradiation. The process likely proceeds through visible-light-enabled photocatalytic generations of acyl radicals as key intermediates.
Li, Jing,Wang, David Zhigang
supporting information
p. 5260 - 5263
(2015/11/18)

The Bu4NI-catalyzed alfa-acyloxylation of ketones with benzylic alcohols
The Bu4NI-catalyzed reaction of ketones with benzylic alcohols was achieved, leading to alfa-acyloxycarbonyl compounds in moderate to good yields. This metal-free procedure featured the employment of facilely and commercially available starting materials and TBHP as a clean oxidant with high atom economy. This journal is the Partner Organisations 2014.
Guo, Songjin,Yu, Jin-Tao,Dai, Qiang,Yang, Haitao,Cheng, Jiang
supporting information
p. 6240 - 6242
(2014/06/09)

Exploring the scope of pyridyl- and picolyl-functionalized 1,2,3-triazol-5-ylidenes in bidentate coordination to ruthenium(II) cymene chloride complexes
1-(2-Pyridyl)-, 4-(2-pyridyl)-, 1-(2-picolyl)-, and 4-(2-picolyl)- functionalized 1,3,4-trisubstituted 1,2,3-triazolium salts (1A-D, respectively) were investigated as N-heterocyclic carbene (trzNHC) precursors for bidentate coordination to ruthenium(II) through the CNHC and N pyridyl donors. In addition to the pyridyl and picolyl pendant groups, a variety of para-substituted phenyl rings were attached to the 1,2,3-triazolylidene via carbon or nitrogen atoms. The ruthenation was accomplished by metalation with Ag2O to form intermediate silver carbene complexes and subsequent transmetalation with [Ru(η6-p- cymene)Cl2]2. The cationic ruthenium complexes [Ru(η6-p-cymene)(trzNHC)Cl]+ (3A-C) were readily obtained with 1-(2-pyridyl)-, 4-(2-pyridyl)-, and 1-(2-picolyl)-1,2,3-triazolium salts (1A-C) but not with the 4-picolyl analogue (1D). The bidentate coordination of the ligand precursors 1 was followed by multinuclear NMR spectroscopy, revealing significant changes in chemical shifts for triazole C-5, pyridine nitrogen atoms, and the neighboring α-proton (H-6 pyridyl) in 13C, 15N, and 1H NMR spectra. The molecular composition of complexes 3A-C was confirmed by elemental analysis and positive ion electrospray ionization (ESI+) mass spectra, the latter showing ions corresponding to [Ru(η6-p-cymene)(trzNHC)Cl] +. The solid-state structures of the three representative complexes were confirmed by single-crystal X-ray analyses; all complexes displayed a typical piano-stool type configuration. Preliminary catalytic activity screening of 3A-C in the oxidation of selected primary and secondary alcohols with tert-butyl hydroperoxide (TBHP) to give carbonyl compounds is also discussed.
Bolje, Aljosa,Hohloch, Stephan,Urankar, Damijana,Pevec, Andrej,Gazvoda, Martin,Sarkar, Biprajit,Kosmrlj, Janez
p. 2588 - 2598
(2014/06/10)

Metal-free oxidative coupling: Xanthone formation via direct annulation of 2-aryloxybenzaldehyde using tetrabutylammonium bromide as a promoter in aqueous medium
A metal-free intramolecular annulation of 2-aryloxybenzaldehydes to xanthones is disclosed, which proceeds through the direct oxidative coupling of an aldehyde C-H bond and aromatic C-H bonds using tetrabutylammonium bromide (TBAB) as a promoter in aqueous medium. This strategy works smoothly in the presence of both electron-donating and electron-withdrawing groups, and displays good tolerance towards catalytically reactive substituents, thus promising further functionalizations of xanthone products.
Rao, Honghua,Ma, Xinyi,Liu, Qianzi,Li, Zhongfeng,Cao, Shengli,Li, Chao-Jun
p. 2191 - 2196
(2013/10/01)

Oxidation of β-dicarbonyl compounds with tert-butyl hydroperoxide in the presence of vanadyl acetylacetonate
Oxidation of β-dicarbonyl compounds with tert-butyl hydroperoxide in the presence of vanadyl acetylacetonate (benzene, 20°C) involves the activated methylene group with intermediate formation of trioxo derivatives and is accompanied by decomposition of carbon skeleton. The oxidation products are carbon dioxide, carboxylic acids, and tert-butyl and peroxy esters derived from the latter.
Stepovik,Gulenova,Kalacheva,Potkina, A. Yu.
scheme or table
p. 550 - 558
(2011/06/23)

Synthesis of tert-butyl peresters from aldehydes by Bu4NI- catalyzed metal-free oxidation and its combination with the Kharasch-Sosnovsky reaction
A new tert-butyl peresters synthesis directly from aldehydes and TBHP was developed via Bu4NI-catalyzed aldehyde C-H oxidation. Mechanistic studies suggest that the protocol proceeds via a radical process. Combining the method with the Kharasch-Sosnovsky reaction offers a practical approach for the synthesis of allylic esters from simple aldehydes and alkenes via a two-step one-pot procedure.
Wei, Wei,Zhang, Chao,Xu, Yuan,Wan, Xiaobing
supporting information; experimental part
p. 10827 - 10829
(2011/11/05)

Method for producing acyl peroxides
The invention relates to a method for producing acyl peroxides. According to said method, an acyl compound is reacted with an organic hydroperoxide and a base, the pH of the two-phase mixture so obtained is adjusted to 6 to 13, the obtained organic phase is extracted with an aqueous solution of a base and the aqueous extract is recirculated to the reaction step. The method according to the invention allows the recirculation of unreacted hydroperoxide to the reaction step.
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Page/Page column 5

(2010/02/17)

Continuous Method for Producing Acyl Peroxides
The invention relates to a continuous method for producing acyl peroxides. According to said method, an acyl chloride, carboxylic acid anhydride or chloroformate is reacted with an organic hydroperoxide or hydrogen peroxide in at least two mixed reaction zones that are connected in series, the acyl compound, the peroxy compound and an aqueous solution of a base being supplied to the first reaction zone. The first reaction zone comprises a cycle for the two-phase reaction mixture via a heat exchanger in which the reaction mixture is cooled. The method allows the reaction to be carried out reliably and with high space-time yields.
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Page/Page column 6

(2010/03/02)

Studies on enantioselective allylic oxidation of olefins using peresters catalyzed by Cu(I)-complexes of chiral pybox ligands
Enantioselective allylic oxidation of olefins with various peresters, using a catalytic amount of Cu(i)-pybox complex, can be tuned to achieve high asymmetric induction (up to 98% ee) by choosing a unique combination of a ligand and a perester at room temperature. The asymmetric induction in the reaction strongly depends on the nature of the substituents attached to the aryl ring of peresters. The presence of a gem-diphenyl group at C-5 and secondary or tertiary alkyl substituents at the chiral center (C-4) of the oxazoline rings is crucial for high enantioselectivity. A π-π stacking model has been proposed and discussed to explain the stereochemical outcome of the reaction. The Royal Society of Chemistry 2006.
Ginotra, Sandeep K.,Singh, Vinod K.
p. 4370 - 4374
(2008/09/19)

Process for the preparation of a tertiary perester
The invention relates to a process for the preparation of a tertiary perester by contacting an acyl compound with a tertiary hydroperoxide in the presence of an enzyme catalyst. The acyl compound has the formula R1[C(O)OR2]n, wherein R1is a linear or branched, saturated or unsaturated C1-C22group, optionally containing one or more hetero atoms, R2represents hydrogen or has the same meaning as described for R1, and n is 1-5, or a polyalcohol ester of R1C(O)OH, wherein R1has the same meaning as described above. The tertiary hydroperoxide has the formula [HOOCR3R3]mR4, wherein R3represents either a methyl or an ethyl group, R4has the same meaning as described for R1, and m is 1-5.
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(2008/06/13)

Oxidation of ethers with the system aluminum tri-tert-butylate-tert-butyl hydroperoxide
The system aluminum tri-tert-butylate-tert-butyl hydroperoxide oxidizes ethers containing α-methylene and α-methine CH bonds: dialkyl, phenyl alkyl, benzyl alkyl, and benzhydryl alkyl. The process involves oxidation of methylene and methine C-H bonds to α-hydroperoxides, followed by their reaction with the aluminum alcoholate. Decomposition of aluminum-containing peroxides yields the final reaction products.
Stepovik,Martynova,Dodonov
p. 257 - 262
(2007/10/03)

The synthesis of organic peresters via the phase transfer catalysis
The acylation of alkyl hydroperoxides with acid chlorides under the phase transfer conditions (PTC) is studied. An evident catalytic effect was observed. This reaction can be considered as a convenient method for the synthesis of organic peresters.
Baj,Chrobok
p. 1185 - 1189
(2007/10/03)

Oxidation of Esters with the Aluminum Tri-tert-butylate-tert-Butyl Hydroperoxide System
The aluminum tri-tert-butylate-tert-butyl hydroperoxide system oxidizes under mild conditions (20°C) esters containing primary, secondary, and tertiary hydrogen atoms both in the acyl and alkoxy groups: isopropyl acetate, propionate, and chloroacetates, benzyl acetate and isobutyrate, and methyl and isobutyl phenylacetates. The reaction involves oxidation of the methylene and methine C-H bonds, nucleophilic addition to the carbonyl group, and ester interchange and is accompanied by cleavage of the carbon skeleton of the acyl group or the ester C-O bond.
Zaburdaeva,Stepovik,Dodonov,Martynova
p. 1902 - 1908
(2007/10/03)

Reactions of Ketones with the Oxidizing System Aluminum Tri-tert-butylate-tert-Butyl Hydroperoxide
Oxidation of ketones containing primary, secondary, and tertiary carbon atoms at the α-position [dialkyl ketones, alkyl aryl ketones, and alkyl (aryl) benzyl ketones] with the system aluminum tri-tert-butylale-tert-butyl hydroperoxide is accompanied by cleavage of the carbon skeleton of the substrate via formation of α-hydroxy carbonyl and α-dicarbonyl compounds. The qualitative and quantitative composition of the reaction products indicates that the oxidation involves free radicals. Simultaneously, the oxidizing system adds across the carbonyl group of the substrate, which is followed by decomposition of aluminum-containing peroxides.
Stepovik,Zaburdaeva,Dodonov
p. 264 - 269
(2007/10/03)

REACTIONS OF ORGANOALUMINUM PEROXIDES WITH HYDROXYCARBONYL AND DICARBONYL COMPOUNDS
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Dodonov, V. A.,Stepovik, L. P.,Sofronova, S. M.,Kosolapkina, E. N.
p. 1004 - 1009
(2007/10/02)

Mass Spectral Fragmentations and Gas Phase Reactions of t-Butyl Peresters
The mass spectral behaviour of a few aliphatic and aromatic peresters has been studied under electron impact (EI) and chemical ionization (CI) conditions.Under EI, fragmentation of the molecules occurs mainly by C-C cleavage at either side of the carbonyl group.The C4H9O+ ion generated by the attack of the CI reagent on the sample molecule adds on to the molecule leading to (M + 73)+ ion in the CI (i-C4H10) spectra while with the more basic reagent, NH3, clustering of the molecule around NH4+ ion is the predominant pathway for ion formation.
Madhusudanan, K. P.,Misra, Dharmendra,Singh, Chandan
p. 398 - 401
(2007/10/02)

REACTIVITY OF CARBOXYLIC ACID ANHYDRIDES IN THE ACYLATION OF TERT-BUTYL HYDROPEROXIDE IN BENZENE
The kinetics of the acylation of tert-butyl hydroperoxide with carboxylic acid anhydrides (RCO2)O (R = C5H11, CH3, C6H5, CH2Cl) in benzene were studied by GLC from the accumulation of tert-butylperoxy esters.Increase in the electron-withdrawing characteristics of the substituent R in the aliphatic series leads to an increase in the reactivity of the anhydride.The steric effect of the group R does not show up appreciably.The enthalpy and entropy of activation were determined.
Antonovskii, V. L.,Zhitina, L. V.,Emelin, Yu. D.,Komarova, V. I.
p. 623 - 626
(2007/10/02)

Peroxide initiators
Mixtures active as initiators for radical polymerization reactions comprising (1) from 1 to 99% by weight of a substituted diphenyl ethane; and (2) from 99 to 1% by weight of an organic peroxide, and a process for desensitizing organic peroxides.
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(2008/06/13)

Batch process for manufacturing and purifying liquid organic peroxide by distillation
A batch process for the manufacture of liquid organic peroxides, such as peroxy esters and diacyl peroxides, by reacting an acid chloride, a hydroperoxide and an alkali metal hydroxide uses a countercurrent, packed distillation column for recovering a purer, drier product with higher yield than previous batch drying processes.
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(2008/06/13)