JP4332084B2 - N−アルキル置換アミノフェノール類の製造方法 - Google Patents
N−アルキル置換アミノフェノール類の製造方法 Download PDFInfo
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- JP4332084B2 JP4332084B2 JP2004208930A JP2004208930A JP4332084B2 JP 4332084 B2 JP4332084 B2 JP 4332084B2 JP 2004208930 A JP2004208930 A JP 2004208930A JP 2004208930 A JP2004208930 A JP 2004208930A JP 4332084 B2 JP4332084 B2 JP 4332084B2
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- acid
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- aminophenol
- aminophenols
- alkyl
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- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 12
- 239000003054 catalyst Substances 0.000 claims description 31
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- -1 aliphatic aldehyde Chemical class 0.000 claims description 14
- CWLKGDAVCFYWJK-UHFFFAOYSA-N 3-aminophenol Chemical compound NC1=CC=CC(O)=C1 CWLKGDAVCFYWJK-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 10
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 10
- 150000007524 organic acids Chemical class 0.000 claims description 8
- 229940018563 3-aminophenol Drugs 0.000 claims description 6
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 claims description 6
- 239000005711 Benzoic acid Substances 0.000 claims description 5
- 235000011054 acetic acid Nutrition 0.000 claims description 5
- 235000010233 benzoic acid Nutrition 0.000 claims description 5
- 239000004310 lactic acid Substances 0.000 claims description 5
- 235000014655 lactic acid Nutrition 0.000 claims description 5
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 4
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 4
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 2
- 239000001630 malic acid Substances 0.000 claims description 2
- 235000011090 malic acid Nutrition 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
- 229940005605 valeric acid Drugs 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 26
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 21
- 150000001299 aldehydes Chemical class 0.000 description 20
- 239000000047 product Substances 0.000 description 19
- YGHRJJRRZDOVPD-UHFFFAOYSA-N 3-methylbutanal Chemical compound CC(C)CC=O YGHRJJRRZDOVPD-UHFFFAOYSA-N 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 8
- 239000007810 chemical reaction solvent Substances 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000004128 high performance liquid chromatography Methods 0.000 description 6
- 238000005984 hydrogenation reaction Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000005932 reductive alkylation reaction Methods 0.000 description 6
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 5
- IXTNODIUFUYXQU-UHFFFAOYSA-N 3-[ethyl(3-methylbutyl)amino]phenol Chemical compound CC(C)CCN(CC)C1=CC=CC(O)=C1 IXTNODIUFUYXQU-UHFFFAOYSA-N 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000006482 condensation reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000004811 liquid chromatography Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KHSTZMGCKHBFJX-UHFFFAOYSA-N 3-(dibutylamino)phenol Chemical compound CCCCN(CCCC)C1=CC=CC(O)=C1 KHSTZMGCKHBFJX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 125000002004 n-butylamino group Chemical group [H]N(*)C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- BCESCHGDVIYYPC-UHFFFAOYSA-N 2-(ethylamino)phenol Chemical compound CCNC1=CC=CC=C1O BCESCHGDVIYYPC-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000007850 fluorescent dye Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001018 xanthene dye Substances 0.000 description 2
- AEEZXQFUVDKVFT-UHFFFAOYSA-N 2-(benzylamino)phenol Chemical compound OC1=CC=CC=C1NCC1=CC=CC=C1 AEEZXQFUVDKVFT-UHFFFAOYSA-N 0.000 description 1
- WTFYGNVWNFVUIK-UHFFFAOYSA-N 2-(butylamino)phenol Chemical compound CCCCNC1=CC=CC=C1O WTFYGNVWNFVUIK-UHFFFAOYSA-N 0.000 description 1
- NQTSBOHCYASAMX-UHFFFAOYSA-N 2-(cyclohexylamino)phenol Chemical compound OC1=CC=CC=C1NC1CCCCC1 NQTSBOHCYASAMX-UHFFFAOYSA-N 0.000 description 1
- NOXLTVYOJPQDLQ-UHFFFAOYSA-N 2-(dibutylamino)phenol Chemical compound CCCCN(CCCC)C1=CC=CC=C1O NOXLTVYOJPQDLQ-UHFFFAOYSA-N 0.000 description 1
- BLCSQUZTWKPKSR-UHFFFAOYSA-N 2-(propan-2-ylamino)phenol Chemical compound CC(C)NC1=CC=CC=C1O BLCSQUZTWKPKSR-UHFFFAOYSA-N 0.000 description 1
- HPOGUOCKUDJHBK-UHFFFAOYSA-N 2-(propylamino)phenol Chemical compound CCCNC1=CC=CC=C1O HPOGUOCKUDJHBK-UHFFFAOYSA-N 0.000 description 1
- NPLDPFJOFYGGCX-UHFFFAOYSA-N 2-[ethyl(3-methylbutyl)amino]phenol Chemical compound CC(C)CCN(CC)C1=CC=CC=C1O NPLDPFJOFYGGCX-UHFFFAOYSA-N 0.000 description 1
- WAFVTVNBYAWKQG-UHFFFAOYSA-N C(C)N(CC)C1=C(C=CC=C1)O.CN(C)C1=C(C=CC=C1)O Chemical compound C(C)N(CC)C1=C(C=CC=C1)O.CN(C)C1=C(C=CC=C1)O WAFVTVNBYAWKQG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 description 1
- 239000007868 Raney catalyst Substances 0.000 description 1
- 229910000564 Raney nickel Inorganic materials 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- JGDFBJMWFLXCLJ-UHFFFAOYSA-N copper chromite Chemical compound [Cu]=O.[Cu]=O.O=[Cr]O[Cr]=O JGDFBJMWFLXCLJ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- AJFDBNQQDYLMJN-UHFFFAOYSA-N n,n-diethylacetamide Chemical compound CCN(CC)C(C)=O AJFDBNQQDYLMJN-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 1
- FXLOVSHXALFLKQ-UHFFFAOYSA-N p-tolualdehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910003446 platinum oxide Inorganic materials 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
1)HPLC分析条件:
カラム:YMC‐PACK ODS‐A A‐312
カラム温度:40℃
移動相:アセトニトリル/水=2000:1000(pH=5.5)
検出波長:260nm
攪拌機付きSUS製500mlオートクレーブに、m−アミノフェノール32.7g(0.3モル)、N,N−ジメチルホルムアミド98.5g(和光純薬品特級)、安息香酸0.7g、2重量%白金担持カーボン触媒(NE.ケムキャット製)3.2g(水分50%含有品)を仕込み、30℃、水素圧力0.8Mpaの条件下で、50重量%のイソバレルアルデヒドを含むN,N−ジメチルホルムアミド溶液54.2g(イソバレルアルデヒド0.315モル)を1時間かけて連続添加した。イソバレルアルデヒドの添加終了後、同温度でさらに30分保持した後、45重量%のアセトアルデヒドを含むN,N−ジメチルホルムアミド溶液38.2g(アセトアルデヒド0.39モル)を1時間かけてオートクレーブ内に連続的に添加した。添加終了後、同温度で180分保持した後冷却し、触媒を濾過分離して得られる反応液234.4gを液体クロマトグラフィーにより分析した結果、N−エチル−N−イソアミル−m−アミノフェノール収率は95.6%、副生物である核水添物〔3−(イソアミルアミノ)−2−ヘキセン−1−オン〕の生成量は0.1%であり、縮合物の生成は0.1%以下であった。
N,N−ジメチルホルムアミドに代えて他の溶媒について検討した。結果を表−1に示す。
攪拌機付きSUS製500mlオートクレーブに、m−アミノフェノール32.7g(0.3モル)、N,N−ジメチルホルムアミド98.5g(和光純薬品特級)、安息香酸2.2g、3重量%パラジウム担持アルミナ触媒(NE.ケムキャット製)2.7gを仕込み、30℃、水素圧力0.5Mpaの条件下で、50重量%のn−ブチルアルデヒドを含むN,N−ジメチルホルムアミド溶液97.1g(n−ブチルアルデヒド0.66モル)を2時間かけて連続添加した。添加終了後、同温度で180分保持した後冷却し、触媒を濾過分離して得られる反応液を液体クロマトグラフィーにより分析した結果、N、N−ジブチル−m−アミノフェノール収率は92.0%。核水添物〔3−(n−ブチルアミノ)−2−ヘキセン−1−オン〕の生成は0.6%であり、縮合物の生成は0.1%以下であった。
実施例6の3重量%パラジウム担持アルミナ触媒(NE.ケムキャット製)2.7gを1%パラジウム担持アルミナ触媒(NE.ケムキャット製)8.1gに代えた以外は、実施例−7と同様に反応を実施した。HPLC分析の結果、N、N−ジブチル−m−アミノフェノール収率は95.0%。核水添物〔3−(n−ブチルアミノ)−2−ヘキセン−1−オン〕の生成は0.5%であり、縮合物の生成は0.1%以下であった。
実施例6の3重量%パラジウム担持アルミナ触媒(NE.ケムキャット製)2.7gを2%白金担持カーボン触媒(NE.ケムキャット製)3.2g(水分50%含有品)に代えた以外は、実施例7と同様に反応を実施した。HPLC分析の結果、N、N−ジブチル−m−アミノフェノール収率は97.0%。核水添物〔3−(n−ブチルアミノ)−2−ヘキセン−1−オン〕の生成は0.1%以下であり、縮合物の生成は0.5%であった。
攪拌機付きSUS製500mlオートクレーブに、m−アミノフェノール32.7g(0.3モル)、メタノール98.5g及び2重量%白金担持カーボン触媒(NE.ケムキャット製)3.3g(水分50%含有品)を仕込み、30℃、水素圧力0.5Mpaの条件下で、50重量%のイソバレルアルデヒドを含むメタノール溶液54.2g(イソバレルアルデヒド0.315モル)を1時間かけて連続添加した。イソバレルアルデヒド添加終了後、同温度でさらに30分保持した後、45重量%のアセトアルデヒド及び酢酸を含むメタノール溶液38.2g(アセトアルデヒド0.39モル、酢酸0.01モル)を1時間かけて連続添加した。添加終了後、同温度で180分保持した後冷却し、触媒を濾過分離して得られる反応液234.5gを液体クロマトグラフィーにより分析した結果、N−エチル−N−イソアミル−m−アミノフェノール収率は94.0%であった。また核水添物〔3−(イソアミルアミノ)−2−ヘキセン−1−オン〕の生成は1.5%であり、縮合物の生成は1.2%であった。
比較例1の2重量%白金担持カーボン触媒(NE.ケムキャット製)3.3g(水分50%含有品)を5%パラジウム担持アルミナ触媒(NE.ケムキャット製)2.7gに代えた以外は、比較例1と同様に反応を実施した。HPLC分析の結果、N−エチル−N−イソアミル−m−アミノフェノール収率は27.6%。核水添物〔3−(イソアミルアミノ)−2−ヘキセン−1−オン〕の生成は4.0%であり、縮合物の生成は3.0%であった。その他に多数の不明成分のピークが検出された。
比較例1のメタノールをトルエンに代えた以外は、比較例1と同様に反応を実施した。HPLC分析の結果、N−エチル−N−イソアミル−m−アミノフェノール収率は23.1%。〔3−(イソアミルアミノ)−2−ヘキセン−1−オン〕の生成は3.3%であり、縮合物の生成は32.2%であった。その他に多数の不明成分のピークが検出された。
Claims (2)
- o−アミノフェノール、m−アミノフェノール、およびp−アミノフェノールから選ばれるアミノフェノール類と、脂肪族アルデヒドとを、還元用触媒、水素、および非プロトン性極性化合物の存在下で反応させるN−アルキル置換アミノフェノール類の製造方法。
- 酢酸、プロピオン酸、ラク酸、吉草酸、安息香酸、コハク酸、イソフタル酸、テレフタル酸、グリコール酸、乳酸、およびリンゴ酸から選ばれる有機酸をさらに共存させる請求項1記載の製造方法。
Priority Applications (1)
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