CS201971B1 - Tertiary butyl-/2,3-dimethyl-3-brom/butyl-2-peroxide and process for preparing thereof - Google Patents

Tertiary butyl-/2,3-dimethyl-3-brom/butyl-2-peroxide and process for preparing thereof Download PDF

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Publication number
CS201971B1
CS201971B1 CS234379A CS234379A CS201971B1 CS 201971 B1 CS201971 B1 CS 201971B1 CS 234379 A CS234379 A CS 234379A CS 234379 A CS234379 A CS 234379A CS 201971 B1 CS201971 B1 CS 201971B1
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Czechoslovakia
Prior art keywords
butyl
dimethyl
peroxide
brom
preparing
Prior art date
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CS234379A
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English (en)
Slovak (sk)
Inventor
Ivan Lukac
Manfred Schulz
Original Assignee
Ivan Lukac
Manfred Schulz
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Ivan Lukac, Manfred Schulz filed Critical Ivan Lukac
Priority to CS234379A priority Critical patent/CS201971B1/cs
Publication of CS201971B1 publication Critical patent/CS201971B1/cs

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Description

Vynález sa týká novej zlúčeniny terc.butyl - /2.3-dimetyl-3-bróm/butyl -2-peroxidu vzorca
CH, CH, CH,
I J I I J
CH, - C -0 - 0 - C - C -Br l· II
CH3 ch3 ch3 a spósobu jeho přípravy.
Doteraz sa podařilo pripraviť metodou peroxymerkurécie brómperoxidy s brómom v /^-polohe v peroxyskupine len na sekundárnom uhlíku /A.J. Bloodworth} I.M, Griffin, J. Chem,
Soc. Perkin, Transaetion I. 1975, 695/.
Předložený vynález využívá spósob přípravy nesubstituovanýeh peroxidov, ktorý je založený na peroxidécii hydroperoxidu s terc.butylhydrogánsulfétom /N.A. Milas, D.M. Surgenol, J. Am. Chem. Soc., 68, 1946/ str. 205 a 643/. ,
Spósob přípravy novej zlúčeniny je založený na tom, že na 2,3-dimetyl - 3 - brómbutyl - 2 - bydroperoxid sa pósobí terč, butylhydrogénsulfétom.
Význam uvedenej zlúčeniny spočívá v jej použití ako iniciátora radikálových reakcií, napr. radikálovéj polymerizácie.
201 971
Příklad
K 6,1 g 2,3-dimetyl-3-brómbutyl-2-hydroperoxidu sa při teplote suchého l'adu v metanole za miešania přidal postupné studený roztok terč. butylhydrogénsulfátu připravený zmiešením zriedenej kyseliny sírovej /3,2 ml konc. HgSO^ + 1,2 ml vody/ s terč. butanolom /4,8 ml./. Po zhomogenizovaní sa zmes miešala pri teplote miestnosti 2 hodiny a nechala stéť do druhého dňa bez miešania. Reakčná zmes sa zriedila dietyléterom a premyla 3-krát vodou. Po vákuovom odpaření éteru sa produkt zriedil n-hexénom a přefiltroval cez 4 cm stípec silikagélu. Po odpaření n-hexánu sa získalo 6 g kvapalného produktu /nD 2θ = 1,4498/ Produkt je možné čistiť i destiláciou /t.v. 61 °C/133 Pa/, avšak produkt velmi pění. Pre zamedzenie premenia okrem varnej kapiláry sa použila ďalšia nad hladinou na rozréžanie pěny. Kvalita produktu čištěného chromátograficky bola podobná s kvalitou destilovaného. Elementárna analýza pre C1Q Hg^ Og Br vypočítané: C = 47,44; H = 8,36; Br = 31,56 nájdené:
C » 47,97; H - 8,99; Br = 34,16. Infračervené spektrum /CCl^/: ^max = 600, 840, 890,,1 110, 1 165, 1 205, 1 250, 1 370, 1 380, 1 465, 2 960, 3 000 cm-1. NMR /CCl^/ : 1,18 /s,9H, C/CH3/3/; 1,40 /β, 6H, Br-C/CH3/2 -/; 1,78 /s, 6H, -0- C/CH3/2 -/. Hmotné spektrum: m/e = 252 /M+/; 195, 179, 163, 165, 131, 121, 123, 73, 69, 57.
PREDMETVYHÍLEZU

Claims (2)

PREDMETVYHÍLEZU
1..Terc.butyl - /2,3 - dimetyl - 3 - bróm/butyl - 2 -peroxid vzorca /
• CH, CH, CH,
I 3 I 3 I 3
CH, - C - 0 - 0 - C - C - Br.
I I I
CH3 ch3 ch3 ,
2. Spdsob přípravy zlúčeniny podl’a bodu 1 vyznačujúci sa tým, že na 2,3 - dimetyl - 3 - bróm/butyl - 2 - hydroperoxid sa pdsobí terc.butylhydrogénaulfátom pri teplote suchého 1’adu v metanole.
CS234379A 1979-04-06 1979-04-06 Tertiary butyl-/2,3-dimethyl-3-brom/butyl-2-peroxide and process for preparing thereof CS201971B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS234379A CS201971B1 (en) 1979-04-06 1979-04-06 Tertiary butyl-/2,3-dimethyl-3-brom/butyl-2-peroxide and process for preparing thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS234379A CS201971B1 (en) 1979-04-06 1979-04-06 Tertiary butyl-/2,3-dimethyl-3-brom/butyl-2-peroxide and process for preparing thereof

Publications (1)

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CS201971B1 true CS201971B1 (en) 1980-12-31

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