TWI667229B - 5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫嘧啶-2(1h)-酮及其製備方法(二) - Google Patents
5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫嘧啶-2(1h)-酮及其製備方法(二) Download PDFInfo
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Abstract
此處提供5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫嘧啶-2(1H)-酮,及其製備方法,其包含使用一鹼金屬烷氧化物及一烷基化劑
Description
本申請案主張美國臨時專利申請案序號第61/922,572及61/922,582號案之利益,每一案係於2013年12月31日申請,其等案之揭露在此被併入以供參考。
此處提供5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫嘧啶-2(1H)-酮及其製備方法。
美國專利申請案2011/0263627描述尤其係某些N3-經取代-N1-磺醯基-5-氟嘧啶酮化合物及其作為殺真菌劑之用途。此申請案之揭露在此被明確地併入以供參考。此專利描述產生N3-經取代-N1-磺醯基-5-氟嘧啶酮化合物之各種路徑。其可有利地提供用於製備、隔離及純化N3-經取代-N1-磺醯基-5-氟嘧啶酮殺真菌劑及相關化合物之更直接且有效率之方法,例如,藉由使用提供改良之時間及成本效率的試劑及/或化學中間物及隔離與純化技術。
此處提供5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫嘧啶-2(1H)-酮及其製備方法。於一實施例,此處提供一種用於製備具有化學式III的化合物之方法:
其中,R1係選自:
且R2係選自:
其包含使具有化學式II之化合物與一鹼,諸如,一鹼金屬碳酸鹽,例如,鈉、鉀、銫及鋰之碳酸鹽(個別係Na2CO3、K2CO3、Cs2CO3,及Li2CO3)或一鹼烷氧化物,例如,第三丁氧化鉀(KOtBu)及一烷基化劑,諸如,具有化學式R2-X之一鹵化烷,其中,R2係如前所定義,且X係一鹵素,例如,碘、溴,及氯,於一極性溶劑中,諸如,N,N-二甲基甲醯胺(DMF)、二甲基亞碸(DMSO)、二甲基乙醯胺(DMA)、N-甲基吡咯啶酮(NMP)、乙腈(CH3CN)等,以從約0.1莫耳(M)至約3M之濃度接觸。於某些實施例,具有化學式II之化合
物對鹼之莫耳比率係從約3:1至約1:1,且具有化學式II之化合物對烷基化劑之莫耳比率係從約1:1至約3:1。於其它實施例,個別為約2:1及約1:3之具有化學式II之化合物對鹼之莫耳比率及具有化學式II之化合物對烷基化劑之莫耳比率被使用。於某些實施例,反應係於-78℃與90℃間之溫度進行,且於其它實施例,反應係於22℃與60℃間之溫度進行。
熟習此項技藝者會瞭解運用上述反應參數會造成具有如流程1中所示之化學式II、III,及IV之化合物的產物混合物之形成,形成之具有化學式II、III,及IV之化合物的比率係從約0:2:1至約1:2:0。於某些實施例,包含具有化學式II及III之化合物的混合物之組成物係較佳,因為隔離及純化可經由沉澱及再結晶達成,且具有化學式II之中間化合物可被回收及再循環。相反地,包含具有化學式III及IV之化合物的混合物之組成物需要層析術分離產生III及具有化學式IV之不期望的二烷基化副產物。
於另外實施例,期望之粗製組成物,即,具有化學式II之化合物及具有化學式III之化合物的混合物,其中,R1係甲氧基(OCH3)且R2係甲基(CH3),係經由使具有化學式II之一化合物與Li2CO3及碘甲烷(CH3I)於DMF(1.0M)中以約1:0.6:3之莫耳比率於45℃接觸而獲得。完全時,粗製組成物以一極性非質子溶劑(諸如,CH3CN)稀釋,其中,CH3CN:DMF之比率係從約2:1至約1:2,其後係以具有約8至約10.5之pH的硫代硫酸鈉(Na2S2O3)水溶液稀釋,其中,2.5重量%之Na2S2O3水溶液:DMF之比率係從約1:2至約3:1,提供一沉澱物,其係可藉由過濾隔離。於一實施例,CH3CN:DMF之比率係約1:2,且2.5% Na2S2O3水溶液:DMF之比率係約1:1,且形成之固體係藉由自此固體於一極性非質子性溶劑(諸如,CH3CN)之溶液的一加溫溶液,約
30℃-40℃,藉由添加水(H2O),結晶化/沉澱而進一步純化,其中,H2O:CH3CN之比率係從約1:2至約3:1,產生具有化學式III之純化化合物,且於另外實施例,影響純III沉澱的H2O:CH3CN之比率係約2:1。
於另外實施例,具有化學式II之化合物可藉由使具有化學式I之化合物與雙-N,O-三甲基矽烷基乙醯胺(BSA)於諸如70℃之高溫接觸約1小時(h)之時間,其後,冷卻及於約20-25℃使含有受保護之嘧啶醇的溶液與通式為R1-PhSO2Cl之一經取代的苯磺醯氯接觸而製備,其中,R1係如前所定義。於某些實施例,具有化學式I之化合物對BSA及磺醯氯之莫耳比率個別係約1:3:1.1,且於另外實施例,使反應物之莫耳比率降至約1:1.1:1.1提供改良之產率。
術語"烷基"係指一分支、未分支,或飽和環狀之碳鏈,不受限地包含甲基、乙基、丙基、丁基、環丙基、異丁基、第三丁基、戊基、己基、環丙基、環丁基、環戊基、環己基等。
術語"烯基"係指含有一或多個雙鍵之一分支、未分支,或環狀之碳鏈,不受限地包含乙烯基、丙烯基、丁烯基、異丙烯基、異丁烯基、環丁烯基、環戊烯基、環己烯基等。
術語"芳基"係指含有0個雜原子之任何芳香族,
單環或二環。
術語"雜環"係指含有一或多個雜原子之任何芳香族或非芳香族之環,單環或二環。
術語"烷氧基"係指一-OR取代基。
術語“鹵素”或“鹵基”係指一或多個鹵素原子,其係定義為F、Cl、Br,及I。
術語"鹵烷基"係指以Cl、F、I,或Br,或此等之任何組合取代之一烷基。
於此揭露之各處,提及具有化學式I、II、III,及IV之化合物係被讀作亦包含光學異構物及鹽類。例示之鹽類可包含:氫氯酸鹽、氫溴酸鹽、氫碘酸鹽等。另外,具有化學式I、II、III及IV之化合物可包含互變異構型式。
此文件中揭露之某些化合物可以一或多種異構物存在。熟習此項技藝者會瞭解一異構物可比其它者更具活性。本揭露中揭露之結構為了清楚係僅以一種幾何型式繪製,但係打算代表此分子之所有幾何及互變異構型式。
於一例示實施例,提供一種製造具有化學式III之化合物的方法。此方法包含使具有化學式II之一化合物與一鹼金屬烷氧化物及一烷基化劑接觸,及形成具有化學式III之一化合物:
其中,R1係選自由、,及;所組成之族群;且R2係選自由、、、,及組成之族群。
於一更特別實施例,接觸步驟係於22℃與60℃之間實行。
於任何上述實施例之一更特別實施例,接觸步驟進一步包含一溶劑,其係選自由DMF、DMSO、DMA、NMP,及CH3CN所組成之族群。
於任何上述實施例之一更特別實施例,鹼金屬烷氧化物係選自由KOtBu、CH3ONa、CH3CH2ONa、CH3CH2OLi、CH3OLi、CH3CH2OK,及CH3CH2ONa所組成之族群。
於任可上述實施例之一更特別實施例,烷基化劑係選自由鹵化烷及鹵甲苯所組成之族群。
於任可上述實施例之一更特別實施例,鹵化烷及鹵甲苯係選自碘化甲烷(CH3I)、碘化乙烷(C2H5I),及溴甲苯(BnBr)。
於任何上述實施例之一更特別實施例,鹼金屬烷氧化物係KOtBu,且溶劑係DMF。
於任何上述實施例之一更特別實施例,化合物II對鹼金屬烷氧化物之莫耳比率係係從約3:1至約1:1,且化合
物II對烷基化劑之莫耳比率係從約1:1至約3:1。於一更特別較佳實施例,化合物II對鹼金屬烷氧化物之莫耳比率係約2:1,化合物II對烷基化劑之莫耳比率係1:3。
於任何上述實施例之一更特別實施例,此方法包含以CH3CN及2.5% Na2S2O3水溶液稀釋一完全反應混合物。於一更特別實施例,DMF對CH3CN之比率係從約1:1至約3:1,且DMF對2.5% Na2S2O3水溶液之比率係從約1:2至約2:1。於另一更特別實施例,DMF對CH3CN之比率係約2:1,且DMF對2.5% Na2S2O3水溶液之比率係約1:1。
於另外實施例,提供一種製備具有化學式II之化合物的方法。此方法包含使具有化學式I之一化合物與雙-N,O-三甲基矽烷基乙醯胺接觸:及形成具有化學式II之一化合物
其中,R1係選自由、,及;所組成之族群;且R2係選自由、、、,及組成之族群;其中,化合物I對雙-N,O-三甲基矽烷基乙醯胺(BSA)之莫耳比率係1:1.1,且接觸步驟係於約22℃至約70℃實行。
於一更特別實施例,接觸步驟進一步包含使化合物I與CH3CN接觸。於另外更特別實施例,此方法包含使一經BSA處理之反應混合物與一芳基磺醯氯接觸。於另外更特別實施例,化合物I對芳基磺醯氯之莫耳比率係從約1:2至約2:1。於另外更特別實施例,化合物I對芳基磺醯氯之莫耳比率係1:1.1。
上述實施例僅係打算作為例示,且熟習此項技藝者僅需使用例行性實驗會瞭解或能確定特別化合物、材料,及程序之多數等化物。所有此等等化物被認為係於本發明範圍內,且係由所附申請專利範圍所包含。
範例1-2中所示之5-氟-4-亞胺基-3-(烷基/經取代烷基)-1-(芳基磺醯基)-3,4-二氫-嘧啶-2(1H)-酮
範例1:4-胺基-5-氟-1-(苯基磺醯基)嘧啶-2(1H)-酮(1)之製備:
對裝設一機械式攪拌器、氮氣入口、添加漏斗、溫度計,及迴流冷凝器之一乾燥500毫升(mL)圓底燒瓶,添
加5-氟胞嘧啶(20.0克(g),155毫莫耳(mmol))及CH3CN(100毫升)。對形成之混合物以一份式添加BSA(34.7克,170毫莫耳),且反應加溫至70℃,且攪拌30分鐘(min)。形成之均勻溶液以一冰浴冷卻至5℃,且以苯磺醯氯逐滴式處理。反應於0℃-5℃攪拌1小時,然後,於室溫攪拌隔夜。形成之淺黃色懸浮液倒至冷的H2O(1.5公升(L))中,劇烈攪拌1小時。形成之固體藉由真空過濾收集,以H2O清洗,且於40℃真空下乾燥隔夜,產生4-胺基-5-氟-1-(苯基磺醯基)嘧啶-2(1H)-酮(29.9克,72%),為粉末狀白色固體:1H NMR(400MHz,DMSO-d6)δ 8.56(s,1H),8.35-8.26(m,2H),8.07-7.98(m,2H),7.84-7.74(m,1H),7.72-7.61(m,2H);19F NMR(376MHz,DMSO-d6)δ -163.46;ESIMS m/z 270([M+H]+)。
表1a中之下列化合物1-3依據流程1所述之反應及範例1所述之程序製造。化合物1-3之特性化數據顯示於表1b中。
a除非其它註記,所有1H NMR數據係於400MHz測量。
b除非其它註記,所有13C NMR數據係於101MHz測量。
c除非其它註記,所有19F NMR數據係於376MHz測量。
範例2:5-氟-4-亞胺基-3-甲基-1-甲苯磺醯基-3,4-二氫嘧啶-2(1H)-酮(5)之製備:
對於DMF(20毫升)中之4-胺基-5-氟-1-甲苯磺醯基嘧啶-2(1H)-酮(20毫莫耳,5.66克)與Li2CO3(0.880克,12.0毫莫耳)之混合物,添加CH3I(8.52克,60毫莫耳),且形成之混合物加溫至40℃,並且攪拌5小時。反應混合物冷卻至室溫,以CH3CN(10毫升)稀釋,且以2.5%Na2S2O3水溶液(20毫升)處理。形成之混合物於室溫攪拌10分鐘,且固體藉由過濾收集。濾餅以CH3CN水溶液(10% CH3CN,於H2O中)清洗,且以空氣乾燥2小時。濾餅溶於40℃之CH3CN(15毫升),且溶液以H2O(30毫升)處理。形成之懸浮液冷卻至室溫,攪拌2.5小時,並且過濾。濾餅再次以10% CH3CN水溶液清洗,然後,於50℃真空下乾燥,產生標題化合物(2.70克,45%),為白色固體:mp 156-158℃;1H NMR(400MHz,DMSO-d6)δ 8.54(d,J=2.3Hz,1H),7.99(dd,J=6.0,0.6Hz,
1H),7.95-7.89(m,2H),7.53-7.45(m,2H),3.12(d,J=0.7Hz,3H),2.42(s,3H);19F NMR(376MHz,DMSO-d6)-157.86(s);ESIMS m/z 298([M+H]+)。
表2a中之下列化合物4-6依據流程2所述之反應及範例2所述之程序製造。化合物4-6之特性化數據顯示於表2b。
a除非其它註記,所有1H NMR數據係於400MHz測量。
b除非其它註記,所有13C NMR數據係於101MHz測量。
c除非其它註記,所有19F NMR數據係於376MHz測量。
Claims (12)
- 如請求項1或2之方法,其中:a.該接觸步驟係於22℃與60℃間實行;b.該接觸步驟進一步包含一溶劑,其係選自由DMF、DMSO、DMA、NMP及CH3CN所組成之族群;c.該鹼金屬烷氧化物係選自由KOtBu、CH3ONa、CH3CH2ONa、CH3CH2OLi、CH3OLi、CH3CH2OK及CH3CH2ONa所組成之族群;及/或d.該烷基化劑係選自由鹵化烷類及鹵甲苯類所組成之族群。
- 如請求項3之方法,其中該鹵化烷及該鹵甲苯係選自碘化甲烷、碘化乙烷及溴甲苯。
- 如請求項1或2之方法,其中該烷基化劑係一鹵化烷,以及該鹵化烷係碘化甲烷或碘化乙烷。
- 如請求項1或2之方法,其中該烷基化劑係一鹵甲苯,以及該鹵甲苯係溴甲苯。
- 如請求項1或2之方法,其中:a.該化學式II之化合物對鹼金屬烷氧化物之莫耳比率係從約3:1至約1:1,以及該化學式II之化合物對烷基化劑之莫耳比率係從約1:1至約3:1;或b.該化學式II之化合物對鹼金屬烷氧化物之莫耳比率係約2:1,以及該化學式II之化合物對烷基化劑之莫耳比率係約1:3。
- 如請求項7之方法,其進一步包含以CH3CN及2.5%的Na2S2O3水溶液稀釋一完全反應混合物之步驟。
- 如請求項8之方法,其中,DMF對CH3CN之比率係從約1:1至約3:1,以及DMF對2.5%的Na2S2O3水溶液之比率係從約1:2至約2:1。
- 如請求項8之方法,其中,DMF對CH3CN之比率係約2:1,以及DMF對2.5%的Na2S2O3水溶液之比率係約1:1。
- 如請求項3之方法,其中:a.該接觸步驟係於22℃與45℃間實行;b.該溶劑係選自由DMF、DMA及NMP所組成之族群;及/或c.該鹼金屬烷氧化物係KOtBu。
- 如請求項3之方法,其中該鹼金屬烷氧化物係KOtBu,以及該溶劑係DMF。
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WO2013025795A1 (en) * | 2011-08-17 | 2013-02-21 | Dow Agrosciences Llc | 5-fluoro-4-imino-3-(substituted)-3,4-dihydropyrimidin-2-(1h)-one derivatives |
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