KR20200023821A - 아연-이미다졸 복합체 혼합물 촉매 및 이를 이용한 메틸 n-페닐카바메이트의 제조방법 - Google Patents
아연-이미다졸 복합체 혼합물 촉매 및 이를 이용한 메틸 n-페닐카바메이트의 제조방법 Download PDFInfo
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Abstract
본 발명의 여러 구현예에 따르면, 반응 안정성이 높아 재사용이 가능한 아연-이미다졸 복합체 촉매를 제조할 수 있다.
또한, 이렇게 제조된 아연-이미다졸 복합체 혼합물 촉매를 이용하여 메틸 N-페닐카바메이트를 제조했을 때 생산 수율 및 선택성을 현저히 향상시킬 수 있다.
Description
도 2는 제조예 5의 one-pot으로 합성된 Zn(Benzimidazole)2 와 Zn(Benzimidazole)OAc가 1:1로 구성된 아연-이미다졸 복합체 혼합물의 XRD(X-ray Diffraction Analyzer) 분석을 통해 분석한 결과를 나타낸 것으로, (a) One-pot 제조된 Zn(Benzimidazole)2와 Zn(Benzimidazole)(OAc)혼합물이고, (b) Zn(Benzimidazole)2, (c) Zn(Benzimidazole)(OAc)이다.
도 3는 제조예 5의 one-pot으로 합성된 Zn(Benzimidazole)2 와 Zn(Benzimidazole)OAc가 1:1로 구성된 아연-이미다졸 복합체 혼합물의 SEM 이미지로, (a), (b) One-pot 제조된 Zn(Benzimidazole)2와 Zn(Benzimidazole)(OAc)혼합물, (c) Zn(Benzimidazole)2, (d) Zn(Benzimidazole)(OAc)이다.
도 4은 제조예 1 내지 5의 촉매 종류에 따른 생성물인 Methyl phenyl carbamate(MPC), Methyl N-methyl phenyl carbamate(MMPC), Methyl aniline(MA), Dimethyl aniline(DMA)을 크로마토그래피로 분석한 결과를 나타낸 것이다.
도 5는 아연-이미다졸 복합체 혼합물 촉매를 1 내지 4회까지 반복하여 반응시킨 후, IR 을 통해 분석한 결과를 나타낸 것이다.
| 구분 | 이미다졸류 | 반응온도(℃) | 반응시간(h) | 생성물 |
| 제조예 2 | 이미다졸 | 150 | 24 | Zn(Imidazole)2 + Zn(Imidazole)OAc |
| 제조예 3 | 2-클로로메틸이미다졸 | 150 | 12 | Zn(2-chloromethylimidazole)2 + Zn(2-chloromethylimidazole)OAc |
| 제조예 4 | 이미다졸-2-카복실산 | 150 | 36 | Zn(imidazole-2-carboxylic acid)2 + Zn(imidazole-2-carboxylic acid)OAc |
| 제조예 5 | 2-페닐이미다졸 | 150 | 48 | Zn(2-phenylimidazole)2 + Zn(2-phenylimidazole)OAc |
| 구분 | Zn(OAc)2 및 벤젠이미다졸의 몰비 | 반응온도(℃) | 반응시간(h) | 생성물(Zn(Benzimidazole)2 : Zn(Benzimidazole)OAc)의 비율 |
| 제조예 6 | 1 : 1.1 | 150 | 12 | 0.1 : 0.9 |
| 제조예 7 | 1 : 1.7 | 150 | 12 | 0.3 : 0.7 |
| 제조예 8 | 1 : 2 | 150 | 12 | 0.2 : 0.8 |
| 제조예 9 | 1 : 4 | 150 | 12 | 0.05 : 0.95 |
| 구분 | 촉매 | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | |||
| 실시예 1 | 제조예 1 | 97.9 | 95.2 | 1.5 | 0.5 | 0.7 |
| 실시예 2 | 제조예 2 | 98.4 | 96.1 | 1.3 | 0.3 | 0.7 |
| 실시예 3 | 제조예 3 | 98.9 | 96.4 | 1.2 | 0.2 | 1.1 |
| 실시예 4 | 제조예 4 | 99.6 | 96.8 | 1.1 | 0.3 | 0.4 |
| 실시예 5 | 제조예 5 | 98.4 | 96.2 | 1.1 | 0.3 | 0.8 |
| 촉매 | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | ||
| 실시예 6 | 95.2 | 66.4 | 0.8 | 1.3 | 1.5 |
| 실시예 7 | 97.5 | 79.1 | 0.5 | 0.5 | 0.7 |
| 실시예 8 | 98.9 | 72.3 | 2.3 | 1.8 | 1.4 |
| 실시예 9 | 99.5 | 70.9 | 2.4 | 3.0 | 2.6 |
| 구분 | 촉매의 양(아닐린 기준, 질량%) | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | |||
| 실시예 10 | 1 | 56.3 | 55.2 | 0.3 | 0.3 | 0.5 |
| 실시예 11 | 5 | 81.5 | 79.1 | 0.5 | 0.2 | 0.7 |
| 실시예 12 | 10 | 99.4 | 98.4 | 1.3 | 0.2 | 0.5 |
| 실시예 13 | 15 | 99.5 | 95.2 | 2.1 | 0.2 | 1.2 |
| 실시예 14 | 20 | 99.5 | 94.8 | 2.2 | 0.2 | 2.3 |
| 구분 | 촉매의 양(아닐린 기준, 질량%) | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | |||
| 실시예 15 | 0.5 | 32.8 | 32.4 | 0.1 | 0.1 | 0.2 |
| 실시예 16 | 1 | 70.6 | 69.1 | 0.1 | 0.2 | 0.2 |
| 실시예 17 | 2 | 99.6 | 98.3 | 1.1 | 0.2 | 1.2 |
| 실시예 18 | 3 | 99.7 | 97.4 | 1.7 | 0.2 | 2.4 |
| 실시예 19 | 5 | 99.6 | 96.1 | 2.8 | 0.2 | 1.5 |
| 구분 | 반응온도(℃) | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | |||
| 실시예 20 | 100 | 15.4 | 15.4 | 0.1 | 0.2 | 0.1 |
| 실시예 21 | 150 | 40.2 | 39.9 | 0.1 | 0.2 | 1.0 |
| 실시예 22 | 190 | 78.9 | 77.3 | 0.7 | 0.2 | 1.7 |
| 실시예 23 | 220 | 99.5 | 96.8 | 1.8 | 0.2 | 1.7 |
| 실시예 24 | 250 | 99.5 | 97.3 | 2.5 | 0.2 | 0.5 |
| 구분 | Zn(Benzimidazole)(OAc): Zn(Benzimidazole)2 | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | |||
| 실시예 25 | 0.2 : 0.8 | 97.5 | 71.6 | 6.3 | 7.9 | 8.7 |
| 실시예 26 | 0.4 : 0.6 | 98.9 | 72.3 | 5.2 | 11.3 | 8.1 |
| 실시예 27 | 0.5 : 0.5 | 98.6 | 89.6 | 3.1 | 2.5 | 3.4 |
| 실시예 28 | 0.6 : 0.4 | 97.7 | 68.2 | 4.2 | 13.9 | 7.8 |
| 실시예 29 | 0.8 : 0.2 | 96.4 | 48.1 | 3.4 | 11.8 | 12.8 |
| 비교예 1 | 0 : 1 | 95.7 | 67.3 | 7.7 | 8.4 | 9.3 |
| 비교예 2 | 1 : 0 | 95.0 | 46.4 | 4.5 | 13.3 | 7.2 |
| 재사용횟수 | 아닐린 전환율(%) | 생성물 수율(%) | |||
| MPC | MMPC | MA | DMA | ||
| 1 | 99.5 | 96.3 | 1.3 | 0.3 | 1.6 |
| 2 | 99.4 | 98.2 | 1.2 | 0.2 | 0.2 |
| 3 | 98.7 | 98.7 | 1.1 | 0.1 | 1.2 |
| 4 | 98.3 | 97.4 | 1.3 | 0.2 | 0.6 |
| 5 | 97.9 | 98.0 | 1.1 | 0.2 | 1.4 |
Claims (14)
- 하기 화학식 1로 표시되는 제1 아연-이미다졸 복합체; 및
하기 화학식 2로 표시되는 제2 아연-이미다졸 복합체;를 포함하는 아연-이미다졸 복합체 혼합물 촉매:
[화학식 1]
Zn(A)x'
[화학식 2]
Zn(A)x"(OAc)y
상기 화학식 1, 2에서
상기 A는 하기 화학식 3 또는 4로 표시되고,
상기 x', x" 및 y는 서로 동일하거나 상이하며 각각 독립적으로 1 내지 2의 유리수이며,
[화학식 3]
[화학식 4]
상기 화학식 3, 4에서,
상기 R1 및 R2는 서로 동일하거나 상이하고, 각각 독립적으로 수소, 메틸기, 클로로메틸기, 페닐기 또는 카복실기이다.
- 제1항에 있어서,
상기 x'= 2, x"= 1, y= 1인 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매.
- 제1 아연-이미다졸 복합체; 및 제2 아연-이미다졸 복합체;를 포함하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법에 있어서,
(A) 아연 전구체 및 이미다졸 전구체를 반응시켜 반응물을 얻는 단계; 및
(B) 상기 반응물을 활성화시키는 단계;를 포함하며,
상기 제1 아연-이미다졸 복합체는 하기 화학식 1로 표시되고,
상기 제2 아연-이미다졸 복합체는 하기 화학식 2로 표시되는 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법:
[화학식 1]
Zn(A)x'
[화학식 2]
Zn(A)x"(OAc)y
상기 화학식 1, 2에서
상기 A는 하기 화학식 3 또는 4로 표시되고,
상기 x', x" 및 y는 서로 동일하거나 상이하며 각각 독립적으로 1 내지 2의 유리수이며,
[화학식 3]
[화학식 4]
상기 화학식 3, 4에서,
상기 R1 및 R2는 서로 동일하거나 상이하고, 각각 독립적으로 수소, 메틸기, 클로로메틸기, 페닐기 또는 카복실기이다.
- 제3항에 있어서,
상기 (A) 단계는 아연 전구체, 이미다졸 전구체 및 제1 용매를 혼합한 후, 100 내지 150 ℃의 온도에서 12 내지 48 시간 동안 반응시키는 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- 제4항에 있어서,
상기 아연 전구체는 아연 염이고,
상기 아연 염은 아세트산 아연 염인 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- 제5항에 있어서,
상기 이미다졸 전구체는 이미다졸, 2-클로로메틸이미다졸, 이미다졸-2-카복실산, 2-페닐이미다졸, 벤젠이미다졸 및 2-메틸이미다졸 중에서 선택된 1종 이상인 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- 제6항에 있어서,
상기 아연 전구체와 이미다졸 전구체는 1 : 1 내지 4의 몰비로 반응시키는 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- 제7항에 있어서,
상기 (B) 단계는 상기 반응물을 제2 용매에 침전시켜 침전물을 회수한 후, 상기 침전물을 180 내지 200 ℃의 온도에서 1 내지 5 시간 동안 건조시키는 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- 제8항에 있어서,
상기 제1 용매 및 제2 용매는 서로 동일하거나 상이하며 각각 독립적으로 N,N-디메틸포름아미드, N,N-디메틸아세트아미드, N-메틸-2-피롤리돈, N-에틸-2-피롤리돈, 비닐피롤리돈, 1, 3-디메틸-2-이미다졸리디논, 디메틸설폭시드 및 헥사메틸포스포라미드 중에서 선택된 1종 이상인 것을 특징으로 하는 아연-이미다졸 복합체 혼합물 촉매의 제조방법.
- (C) 제1항 내지 제9항 중 어느 한 항에 따라 제조된 아연-이미다졸 복합체 혼합물 촉매와 방향족 아민 및 디메틸카보네이트를 반응시키는 단계;를 포함하는 것을 특징으로 하는 메틸 N-페닐카바메이트의 제조방법.
- 제10항에 있어서,
상기 반응은 100 내지 250 ℃의 온도에서 1 내지 5 시간 동안 수행되는 것을 특징으로 하는 메틸 N-페닐카바메이트의 제조방법.
- 제10항에 있어서,
상기 방향족 아민 및 디메틸카보네이트의 몰비는 1 : 5 내지 40인 것을 특징으로 하는 메틸 N-페닐카바메이트의 제조방법.
- 제10항에 있어서,
상기 아연-이미다졸 복합체 혼합물은 상기 방향족 아민 중량에 대하여 1 내지 20 wr% 함량으로 투입하는 것을 특징으로 하는 메틸 N-페닐카바메이트의 제조방법.
- 제10항에 있어서,
상기 방향족 아민은 아닐린, 페닐렌디아민, 메틸렌디페닐디아민 및 톨루엔디아민 중에서 선택된 1종 이상인 것을 특징으로 하는 메틸 N-페닐카바메이트의 제조방법.
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| KR1020180100230A KR102132856B1 (ko) | 2018-08-27 | 2018-08-27 | 아연-이미다졸 복합체 혼합물 촉매 및 이를 이용한 메틸 n-페닐카바메이트의 제조방법 |
| US16/196,549 US10722875B2 (en) | 2018-08-27 | 2018-11-20 | Zinc-imidazole complex mixed catalyst and method for producing methyl N-phenyl carbamate using the same |
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| KR1020180100230A KR102132856B1 (ko) | 2018-08-27 | 2018-08-27 | 아연-이미다졸 복합체 혼합물 촉매 및 이를 이용한 메틸 n-페닐카바메이트의 제조방법 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763217A (en) | 1970-12-03 | 1973-10-02 | Halcon International Inc | Preparation of carbamates |
| US4268683A (en) | 1980-02-21 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
| KR20170118460A (ko) * | 2016-04-15 | 2017-10-25 | 한국과학기술연구원 | 아연-아민 복합체 촉매, 이의 제조방법 및 이를 이용한 메틸 n-페닐 카바메이트의 제조방법 |
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| IT1282022B1 (it) * | 1995-07-06 | 1998-03-06 | Mini Ricerca Scient Tecnolog | Procedimento per la produzione di carbammati aromatici |
| EP2230228A1 (en) * | 2009-03-16 | 2010-09-22 | Bayer MaterialScience AG | Process for preparing aromatic carbamates |
| FR2978442B1 (fr) * | 2011-07-28 | 2013-07-12 | IFP Energies Nouvelles | Nouveau materiau hybride organique-inorganique ihm-4 et son procede de preparation |
| US9976028B2 (en) * | 2015-02-23 | 2018-05-22 | King Industries | Curable coating compositions of silane functional polymers |
| US10807084B2 (en) * | 2017-05-15 | 2020-10-20 | Covestro Deutschland Ag | Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3763217A (en) | 1970-12-03 | 1973-10-02 | Halcon International Inc | Preparation of carbamates |
| US4268683A (en) | 1980-02-21 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
| KR20170118460A (ko) * | 2016-04-15 | 2017-10-25 | 한국과학기술연구원 | 아연-아민 복합체 촉매, 이의 제조방법 및 이를 이용한 메틸 n-페닐 카바메이트의 제조방법 |
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| Zhangg L et. al. Catalysis Today., 158, 279-285 (2010) |
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| US20200061596A1 (en) | 2020-02-27 |
| KR102132856B1 (ko) | 2020-07-13 |
| US10722875B2 (en) | 2020-07-28 |
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