TWI610922B - 製造醯胺之方法 - Google Patents
製造醯胺之方法 Download PDFInfo
- Publication number
- TWI610922B TWI610922B TW102141130A TW102141130A TWI610922B TW I610922 B TWI610922 B TW I610922B TW 102141130 A TW102141130 A TW 102141130A TW 102141130 A TW102141130 A TW 102141130A TW I610922 B TWI610922 B TW I610922B
- Authority
- TW
- Taiwan
- Prior art keywords
- fluoro
- methyl
- cyclopropyl
- pyrazole
- chloro
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 150000003857 carboxamides Chemical class 0.000 title 1
- -1 1-methyl-3-difluoromethyl-5-fluoro-1H-pyrazole-4-carbonyl halide Chemical class 0.000 claims abstract description 30
- 239000002253 acid Substances 0.000 claims abstract description 23
- 150000001408 amides Chemical class 0.000 claims abstract description 13
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 20
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 150000001412 amines Chemical class 0.000 claims description 17
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 3
- ZNPUHPIMSDMYGC-UHFFFAOYSA-N n-[(5-chloro-2-ethylphenyl)methyl]-n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methylpyrazole-4-carboxamide Chemical compound CCC1=CC=C(Cl)C=C1CN(C(=O)C=1C(=NN(C)C=1F)C(F)F)C1CC1 ZNPUHPIMSDMYGC-UHFFFAOYSA-N 0.000 claims description 3
- YBQARPUVLHEOSY-UHFFFAOYSA-N n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-n-[(2-propan-2-ylphenyl)methyl]pyrazole-4-carboxamide Chemical compound CC(C)C1=CC=CC=C1CN(C(=O)C=1C(=NN(C)C=1F)C(F)F)C1CC1 YBQARPUVLHEOSY-UHFFFAOYSA-N 0.000 claims description 3
- XTRVHRSUSXRHLB-UHFFFAOYSA-N n-cyclopropyl-n-[(2-cyclopropylphenyl)methyl]-3-(difluoromethyl)-5-fluoro-1-methylpyrazole-4-carboxamide Chemical compound CN1N=C(C(F)F)C(C(=O)N(CC=2C(=CC=CC=2)C2CC2)C2CC2)=C1F XTRVHRSUSXRHLB-UHFFFAOYSA-N 0.000 claims description 3
- PZSVWPHTFIJDAX-UHFFFAOYSA-N n-[(2-tert-butylphenyl)methyl]-n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methylpyrazole-4-carboxamide Chemical compound CN1N=C(C(F)F)C(C(=O)N(CC=2C(=CC=CC=2)C(C)(C)C)C2CC2)=C1F PZSVWPHTFIJDAX-UHFFFAOYSA-N 0.000 claims description 2
- POIXHZKAAMCWOT-UHFFFAOYSA-N n-[[3-chloro-2-fluoro-6-(trifluoromethyl)phenyl]methyl]-n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methylpyrazole-4-carboxamide Chemical compound CN1N=C(C(F)F)C(C(=O)N(CC=2C(=CC=C(Cl)C=2F)C(F)(F)F)C2CC2)=C1F POIXHZKAAMCWOT-UHFFFAOYSA-N 0.000 claims description 2
- MRCJJCNYJGXHAU-UHFFFAOYSA-N n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-n-[(5-methyl-2-propan-2-ylphenyl)methyl]pyrazole-4-carboxamide Chemical compound CC(C)C1=CC=C(C)C=C1CN(C(=O)C=1C(=NN(C)C=1F)C(F)F)C1CC1 MRCJJCNYJGXHAU-UHFFFAOYSA-N 0.000 claims description 2
- GZSDSDAVLHAHBW-UHFFFAOYSA-N n-cyclopropyl-3-(difluoromethyl)-5-fluoro-1-methyl-n-[[5-methyl-2-(trifluoromethyl)phenyl]methyl]pyrazole-4-carboxamide Chemical compound CC1=CC=C(C(F)(F)F)C(CN(C2CC2)C(=O)C=2C(=NN(C)C=2F)C(F)F)=C1 GZSDSDAVLHAHBW-UHFFFAOYSA-N 0.000 claims description 2
- KBWODRLEGDCUHW-UHFFFAOYSA-N n-cyclopropyl-3-(difluoromethyl)-5-fluoro-n-[(5-fluoro-2-propan-2-ylphenyl)methyl]-1-methylpyrazole-4-carboxamide Chemical compound CC(C)C1=CC=C(F)C=C1CN(C(=O)C=1C(=NN(C)C=1F)C(F)F)C1CC1 KBWODRLEGDCUHW-UHFFFAOYSA-N 0.000 claims description 2
- FLQNESNIAKFCNJ-UHFFFAOYSA-N n-cyclopropyl-3-(difluoromethyl)-n-[(2-ethyl-4,5-dimethylphenyl)methyl]-5-fluoro-1-methylpyrazole-4-carboxamide Chemical compound CCC1=CC(C)=C(C)C=C1CN(C(=O)C=1C(=NN(C)C=1F)C(F)F)C1CC1 FLQNESNIAKFCNJ-UHFFFAOYSA-N 0.000 claims description 2
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Abstract
本發明係關於一種用於製造式(I)之醯胺衍生物的方法,
其在缺乏酸性接受體下自1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基鹵化物開始而製造。
Description
本發明係關於一種由相應的吡唑醯鹵及環丙基胺衍生物,在缺乏酸性接受體下製造已知的具有殺真菌活性的環丙醯胺的新穎方法。
從國際申請案WO2010/130767已知,N-環烷基-苯甲基-醯胺衍生物可藉由相應的醯氯與所需環丙基胺衍生物在酸結合劑存在下反應而獲得。
亦從國際專利申請案WO2007/087906已知,N-環烷基-苯甲基-醯胺衍生物可藉由相應的醯氯與所需環丙基胺衍生物反應而獲得。然而,該文獻未明確揭示在缺乏酸結合劑下之方法。
亦從國際專利申請案WO2006/136287已知,5-氟-1,3-二甲基-1H-吡唑-4-羰基氟化物可在缺乏酸性接受體下與不同的苯胺衍生物反應以形成相應的羧基醯胺。因為在反應期間形成之弱酸(HF)不與低鹼性苯胺生成鹽,故在無任何酸性接受體下可進行該反應及該反應可繼續至完成。
然而,對於由醯鹵及胺獲得之醯胺的形成(蕭頓-巴姆法(Schotten-Baum process))而言,應用之輔助鹼(酸性接受體)(如NEt3、Py)或無機鹼(如NaOH)通常為強制的。在許多情形下,用於形成醯胺之過量的胺亦可加以使用以補集形成之酸。應用之其他鹼使得該方法更昂貴。
其中R係選自如下之列表:2-異丙基、2-環丙基、2-第三丁基、5-氯-2-乙基、5-氯-2-異丙基、2-乙基-5-氟、5-氟-2-異丙基、2-環丙基-5-氟、2-環戊基-5-氟、2-氟-6-異丙基、2-乙基-5-甲基、2-異丙基-5-甲基、2-環丙基-5-甲基、2-第三丁基-5-甲基、5-氯-2-(三氟甲基)、5-甲基-2-(三氟甲基)、2-氯-6-(三氟甲基)、3-氯-2-氟-6-(三氟甲基)及2-乙基-4,5-二甲基,可藉由式(II)之1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基鹵化物,
其中R係如上所定義,在缺乏酸性接受體(亦稱為酸結合劑)下反應而製造。
在本發明之上下文中,「在缺乏酸性接受體下」意指「在缺乏除胺反應物(III)以外之酸性接受體下」或「在缺乏另一酸性接受體下」,其中「另一」意指除作為該反應之一部分之式(III)之胺衍生物之外。
其中X為F、Cl、Br、I、HSO4、CH3COO、BF4、CH3SO3、CF3COO或CF3SO3。
出人意料地,式(I)之醯胺可在本發明之條件下、在良好產率下以高純度及選擇性製造。根據本發明之方法的另一優點在於由於不需要酸性接受體,故處理更簡單。這不產生廢水,一種無需先前的藉由在相同反應容器中添加脂族醇而單離的更容易的純化法,及可以高達50至70重量%的更高濃度操作該方法。
已經以超過95%或甚至接近100%之出人意料的純度,及以較少試劑及努力獲得所得產物,而在酸性接受體存在下之先前條件一般產生接近(或小於)85至90%的純度。該出人意料的純度可歸因於缺乏經由在酸性接受體存在下水解醯氯而生成,或來源於藉由酸性接受體(如NEt3、NaOH、K2CO3)取代位置5中之極具反應性的氟之副產物(如吡唑酸)。該等副產物之缺乏增加最終產物的純度及使得純化較不複雜及更少困難。
另外,無酸性接受體之方法對胺中存在之雜質(例如,來自之前步驟之水分或醇)出人意料地較不敏感。該出人意料的效果可歸因於該等雜質在本發明之條件下不與醯氯反應及不影響最終產物之純度的事實。有利的結果在於具有低純度之胺仍可成功用於製造式(I)之醯胺中,使得根據本發明之方法更有經濟價值及更簡單。
已知在實施根據本發明之方法中用作起始物質的式(II)之1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基氯及氟化物(WO 2011131615;WO 2011061205)。
根據本發明之方法較佳地用於製造一種選自由如下組成之群的式(I)之化合物:N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-N-(2-環丙基苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-(2-第三丁基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-(5-氯-2-乙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-(5-氯-2-異丙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-
1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-N-(2-乙基-5-氟苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-5-氟-N-(5-氟-2-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-N-(2-環丙基-5-氟苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-(2-環戊基-5-氟苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-5-氟-N-(2-氟-6-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-N-(2-乙基-5-甲基苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基-5-甲基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-N-(2-環丙基-5-甲基苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-(2-第三丁基-5-甲基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-[5-氯-2-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A15)、N-環丙基-3-(二氟甲基)-5-氟-1-甲基-N-[5-甲基-2-(三氟甲基)苯甲基]-1H-吡唑-4-甲醯胺(化合物A16)、N-[2-氯-6-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、N-[3-氯-2-氟-6-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-
1-甲基-1H-吡唑-4-甲醯胺、N-環丙基-3-(二氟甲基)-N-(2-乙基-4,5-二甲基苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺、及N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基苯甲基)-1-甲基-1H-吡唑-4-硫代甲醯胺。
式(III)之胺衍生物及其鹽係已知或可以已知的方式製造。根據本發明之方法可在稀釋劑之存在下進行。用於該目的之適用的稀釋劑包括所有惰性有機溶劑,較佳係脂族、脂環族或芳族烴,例如石油醚、己烷、庚烷、環己烷、甲基環己烷、苯、甲苯、二甲苯或十氫化萘;鹵化烴,例如氯苯、二氯苯、二氯甲烷、氯仿、四氯甲烷、二氯乙烷或三氯乙烷;醚,諸如乙醚、二異丙基醚、甲基第三丁基醚、甲基第三戊基醚、二噁烷、四氫呋喃、1,2-二甲氧基乙烷、1,2-二乙氧基乙烷或苯甲醚;酮,諸如丙酮、丁酮、甲基異丁基酮或環己酮;腈,諸如乙腈、丙腈、正-或異丁腈或苯甲腈;醯胺,諸如N,N-二甲基甲醯胺、N,N-二甲基乙醯胺、N-甲基甲醯胺、N-甲基吡咯啶酮或六甲基磷醯胺,更佳使用氯苯及甲苯。
在實施根據本發明之方法時的反應溫度可在相對廣的範圍內變化。一般而言,採用70℃至150℃之溫度,較佳係80℃至140℃之溫度。
在實施根據本發明之方法時,一般每莫耳式(II)之1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基鹵化物使用介於0.8與1.5mol之間,較佳係等莫耳量之式(III)及(IY)之胺衍生物。
取決於反應物之反應性,反應時間可長達15小時,亦可在完全轉化的情形下,甚至更早地結束反應。反應時間較佳係5至10小時。
一般在標準壓力下進行根據本發明之所有方法。然而,可在加壓或減壓(一般介於0.1巴與10巴之間)下操作。對於處理而言,其足以
除去溶劑及使形成之產物沉澱。亦可萃取產物及利用水洗滌溶液。在所有情形中,產物係以超過95%之純度形成,因此不需要任何進一步的純化。
本發明式(I)之醯胺的製法敘述於以下實例中,其進一步說明以上敘述。然而,該等實例不應以限制性方式理解。
製造實例
製造實例:N-(2-異丙基-5-氯1-苯甲基)-N-環丙基-5-氟-1-甲基-3-二氟甲基-1H-吡唑-4-甲醯胺
在保護性氣體(氬氣)下,最初加入含N-(2-異丙基-5-氯-苯甲基)環丙胺22.4g(100mmol)之100ml氯苯之溶液。添加21.2g(100mmol)1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基氯及在100℃攪拌該混合物8h。為了處理,在真空下除去溶劑及利用50ml冷異丙醇洗滌殘質以產生37g(93%之理論值)呈白色晶體形式之具有108至110℃之熔點的醯胺。
製造實例:N-(4-三氟甲基-苯甲基)-N-環丙基-5-氟-1,3-二甲基-1H-吡唑-4-甲醯胺
在100℃,加熱含25g N-(4-三氟甲基-苯甲基)環丙胺鹽酸鹽、17g 5-氟-1,3-二甲基-1H-吡唑-4-羰基氯之200ml甲苯溶液8h。減壓下除去溶劑。利用50ml冷異丙醇洗滌殘質以產生31g呈白色固體之所需N-(4-三氟甲基-苯甲基)-N-環丙基-5-氟-1,3-二甲基-1H-吡唑-4-甲醯胺(LogP=2.8)。
類似製得
N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺,產率93%。
N-環丙基-N-(2-環丙基苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺,產率95%。
N-(2-第三丁基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺,產率93%。
N-(5-氯-2-乙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺,產率89%。
N-(5-氯-2-異丙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺,產率97%。
Claims (6)
- 一種用於製造式(I)之醯胺衍生物的方法,
其中R係選自如下之列表:2-異丙基、2-環丙基、2-第三丁基、5-氯-2-乙基、5-氯-2-異丙基、2-乙基-5-氟、5-氟-2-異丙基、2-環丙基-5-氟、2-環戊基-5-氟、2-氟-6-異丙基、2-乙基-5-甲基、2-異丙基-5-甲基、2-環丙基-5-甲基、2-第三丁基-5-甲基、5-氯-2-(三氟甲基)、5-甲基-2-(三氟甲基)、2-氯-6-(三氟甲基)、3-氯-2-氟-6-(三氟甲基)及2-乙基-4,5-二甲基,其特徵在於式(II)之1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基鹵化物, 其中Hal為F、Cl或Br,與式(III)或(IY)之胺衍生物 其中R係如上所定義, X為F、Cl、Br、I、HSO4、CH3COO、BF4、CH3SO3、CF3COO或CF3SO3,在缺乏另一酸性接受體下反應;其中每莫耳之式(II)化合物係使用介於0.8至1.5莫耳之式(III)或(IY)之胺衍生物。 - 如請求項1或2之方法,其用於製造一種選自由如下組成之群的醯胺衍生物:N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺(化合物A1)、N-環丙基-N-(2-環丙基苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A2)、N-(2-第三丁基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A3)、N-(5-氯-2-乙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A4)、N-(5-氯-2-異丙基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A5)、N-環丙基-3-(二氟甲基)-N-(2-乙基-5-氟苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A6)、N-環丙基-3-(二氟甲基)-5-氟-N-(5-氟-2-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺(化合物A7)、 N-環丙基-N-(2-環丙基-5-氟苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A8)、N-(2-環戊基-5-氟苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A9)、N-環丙基-3-(二氟甲基)-5-氟-N-(2-氟-6-異丙基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺(化合物A10)、N-環丙基-3-(二氟甲基)-N-(2-乙基-5-甲基苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A11)、N-環丙基-3-(二氟甲基)-5-氟-N-(2-異丙基-5-甲基苯甲基)-1-甲基-1H-吡唑-4-甲醯胺(化合物A12)、N-環丙基-N-(2-環丙基-5-甲基苯甲基)-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A13)、N-(2-第三丁基-5-甲基苯甲基)-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A14)、N-[5-氯-2-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A15)、N-環丙基-3-(二氟甲基)-5-氟-1-甲基-N-[5-甲基-2-(三氟甲基)苯甲基]-1H-吡唑-4-甲醯胺(化合物A16)、N-[2-氯-6-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A17)、N-[3-氯-2-氟-6-(三氟甲基)苯甲基]-N-環丙基-3-(二氟甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A18)、及N-環丙基-3-(二氟甲基)-N-(2-乙基-4,5-二甲基苯甲基)-5-氟-1-甲基-1H-吡唑-4-甲醯胺(化合物A19)。
- 一種式(II)之1-甲基-3-二氟甲基-5-氟-1H-吡唑-4-羰基鹵化物,
其中Hal為F、Cl或Br,及式(III)之胺衍生物的用途, 其中R係選自如下之列表:2-異丙基、2-環丙基、2-第三丁基、5-氯-2-乙基、5-氯-2-異丙基、2-乙基-5-氟、5-氟-2-異丙基、2-環丙基-5-氟、2-環戊基-5-氟、2-氟-6-異丙基、2-乙基-5-甲基、2-異丙基-5-甲基、2-環丙基-5-甲基、2-第三丁基-5-甲基、5-氯-2-(三氟甲基)、5-甲基-2-(三氟甲基)、2-氯-6-(三氟甲基)、3-氯-2-氟-6-(三氟甲基)及2-乙基-4,5-二甲基,其用於在缺乏另一酸性接受體下製造式(I)之醯胺衍生物, 其中R係如上所定義,及其中每莫耳之式(II)化合物係使用介於0.8至1.5莫耳之式(III)之胺衍生物。
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