PL433281A1 - 1,2-di(methoxycarbonyl)benzo[1,2-j]coronene and the method of its preparation - Google Patents

1,2-di(methoxycarbonyl)benzo[1,2-j]coronene and the method of its preparation

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Publication number
PL433281A1
PL433281A1 PL433281A PL43328120A PL433281A1 PL 433281 A1 PL433281 A1 PL 433281A1 PL 433281 A PL433281 A PL 433281A PL 43328120 A PL43328120 A PL 43328120A PL 433281 A1 PL433281 A1 PL 433281A1
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Poland
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methoxycarbonyl
benzo
perylene
mmol
reactor
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PL433281A
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Polish (pl)
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PL240179B1 (en
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Stanisław Krompiec
Aneta Kurpanik
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Uniwersytet Śląski W Katowicach
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Priority to PL433281A priority Critical patent/PL240179B1/en
Publication of PL433281A1 publication Critical patent/PL433281A1/en
Publication of PL240179B1 publication Critical patent/PL240179B1/en

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Abstract

Przedmiotem wynalazku jest 1,2-di(metoksykarbonylo)benzo[1,2-j]koronen przedstawiony wzorem 1. Istotę wynalazku stanowi również sposób otrzymywania 1,2-di(metoksykarbonylo)benzo[1,2-j]koronenu przedstawionego wzorem 1, polegający na tym, że w pierwszym etapie do reaktora wprowadza się, w atmosferze gazu obojętnego, perylen i dienofil w postaci acetylenodikarboksylanu dimetylowego, przy czym nadmiar dienofila jest co najmniej trzykrotny, a następnie zamyka się reaktor i zawartą w nim mieszaninę reakcyjną ogrzewa się przez co najmniej 6 godzin, w temperaturze nie niższej niż 160°C, ale nie wyższej od temperatury rozkładu mieszaniny reakcyjnej, po czym oddestylowuje się nadmiarowy acetylenodikarboksylan, a pozostałość poddaje się oczyszczaniu za pomocą chromatografii kolumnowej na żelu krzemionkowym, stosując jako eluent niskowrzący nasycony węglowodór lub mieszaninę takich węglowodorów, co pozwala otrzymać produkt o czystości >98% z wydajnością do 95%. W etapie drugim, do reaktora odizolowanego od dostępu światła wprowadza się 1,2-di(metoksykarbonylo)benzo[ghi]perylen otrzymany w etapie pierwszym, mieszaninę stopionego sukcynonitrylu z 1,2-dimetoksyetanem w stosunku objętościowym mieszaniny od 3:1 do 1:3, w ilości od 5 do 20 ml tej mieszaniny na 1 mmol 1,2-di(metoksykarbonylo)benzo[ghi]perylenu, oraz fluorek cezu w ilości od 2 do 8 mmoli na 1 mmol 1,2-di(metoksykarbonylo)benzo[ghi]perylenu, następnie do mieszaniny reakcyjnej wprowadza się triflat 2-trimetylosililofenylu w ilości od 2 do 8 mmoli, na 1 mmol 1,2-di(metoksykarbonylo)benzo[ghi]perylenu, po czym zawartość reaktora miesza się w temperaturze od 40 do 100°C, w atmosferze gazu obojętnego, przez co najmniej 12 godzin, po czym, po zakończeniu reakcji cykloaddycji benzynu, chłodzi się zawartość reaktora do temperatury nie wyższej niż 50°C, i odparowuje lotne frakcje, zaś pozostałość przemywa się kilka razy ciekłym nasyconym węglowodorem alifatycznym, następnie kilka razy wodą, po czym przeprowadza się dalsze oczyszczanie metodą chromatografii kolumnowej w układzie faz normalnych, gdzie faza stacjonarna to żel krzemionkowy, faza ruchoma to mieszanina nasyconego ciekłego węglowodoru z chlorkiem metylenu w stosunku objętościowym od 10:1 do 1:1, otrzymując w efekcie produkt w postaci 1,2-di(metoksykarbonylo)benzo[1,2-j]koronenu o czystości >98% z wydajnością do 65%.The subject of the invention is 1,2-di (methoxycarbonyl) benzo [1,2-j] coronene represented by the formula 1. The invention also relates to the method of obtaining 1,2-di (methoxycarbonyl) benzo [1,2-j] coronene represented by the formula 1 , consisting in the fact that in the first stage, perylene and dienophile in the form of dimethyl acetylenedicarboxylate are introduced into the reactor under an inert gas atmosphere, the excess of dienophile being at least three times, and then the reactor is closed and the reaction mixture contained therein is heated by at least 6 hours at a temperature not lower than 160 ° C but not higher than the decomposition temperature of the reaction mixture, then excess acetylenedicarboxylate is distilled off, and the residue is purified by column chromatography on silica gel using a low-boiling saturated hydrocarbon as eluent, or a mixture of such hydrocarbons, which allows a product of> 98% purity to be obtained with a yield of up to 95%. In the second stage, 1,2-di (methoxycarbonyl) benzo [gh] perylene obtained in the first stage, a mixture of molten succinonitrile with 1,2-dimethoxyethane in a volume ratio of 3: 1 to 1, is introduced into the reactor isolated from the access of light: 3, in an amount of 5 to 20 ml of this mixture per 1 mmol of 1,2-di (methoxycarbonyl) benzo [gh] perylene, and cesium fluoride in an amount of 2 to 8 mmol per 1 mmol of 1,2-di (methoxycarbonyl) benzo [ghi] perylene, then 2-trimethylsilylphenyl triflate is introduced into the reaction mixture in an amount of 2 to 8 mmol, per 1 mmol of 1,2-di (methoxycarbonyl) benzo [ghi] perylene, and then the contents of the reactor are stirred at a temperature of 40 to 100 ° C, in an inert gas atmosphere, for at least 12 hours, then, after completion of the gasoline cycloaddition reaction, the contents of the reactor are cooled to a temperature of not more than 50 ° C, and volatile fractions are evaporated, and the residue is washed several times with liquid saturated aliphatic hydrocarbon, then several times with water, after further purification by normal phase column chromatography is carried out, where the stationary phase is silica gel, the mobile phase is a mixture of saturated hydrocarbon liquid with methylene chloride in a volume ratio of 10: 1 to 1: 1, resulting in a product in the form of 1, 2-di (methoxycarbonyl) benzo [1,2-j] coronene with purity> 98% in yield up to 65%.

PL433281A 2020-03-18 2020-03-18 1,2-di(methoxycarbonyl)benzo[1,2-j]coronene and the method of its preparation PL240179B1 (en)

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PL433281A PL240179B1 (en) 2020-03-18 2020-03-18 1,2-di(methoxycarbonyl)benzo[1,2-j]coronene and the method of its preparation

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PL433281A PL240179B1 (en) 2020-03-18 2020-03-18 1,2-di(methoxycarbonyl)benzo[1,2-j]coronene and the method of its preparation

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PL433281A1 true PL433281A1 (en) 2021-09-20
PL240179B1 PL240179B1 (en) 2022-02-28

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