TW201930251A - 依3,5,5-三甲基己酸/ho之比率來進行二異丁烯之鈀催化羥基羰基化的方法 - Google Patents

依3,5,5-三甲基己酸/ho之比率來進行二異丁烯之鈀催化羥基羰基化的方法 Download PDF

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TW201930251A
TW201930251A TW107145724A TW107145724A TW201930251A TW 201930251 A TW201930251 A TW 201930251A TW 107145724 A TW107145724 A TW 107145724A TW 107145724 A TW107145724 A TW 107145724A TW 201930251 A TW201930251 A TW 201930251A
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trimethylhexanoic acid
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桑睿
彼得 庫米伊克
董開武
雷夫 傑克斯泰爾
馬席爾斯 貝勒
羅柏特 法蘭克
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德商贏創德固賽有限責任公司
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Abstract

依3,5,5-三甲基己酸/H2O之比率來進行二異丁烯之鈀催化羥基羰基化的方法。

Description

依3,5,5-三甲基己酸/H2O之比率來進行二異丁烯之鈀催化羥基羰基化的方法
本發明係關於依3,5,5-三甲基己酸/H2 O之比率來進行二異丁烯之鈀催化羥基羰基化的方法。
包括丙酸、己二酸以及脂肪酸的羧酸用於製備聚合物、藥物、溶劑和食品添加劑。產生羧酸的途徑通常包括烴類、醇類或醛類的氧化,經由臭氧分解的烯烴的氧化裂解,甘油三酯、腈、酯或醯胺的水解,格氏試劑(Grignard)或有機鋰試劑的羧化,以及鹵化和隨後鹵代反應中的甲基酮的水解。
烯烴的羥基羧化是用於獲得羧酸的非常有前途以及環境友好的方法。經由甲醇的羰基化產生乙酸,其與碘化物進行。在Koch反應中,向烯烴中加入水和一氧化碳是經由強鹼催化的。該方法對於形成二級和三級碳陽離子的烯烴是有效的,例如,異丁烯至新戊酸。通過同時向烯烴/炔烴中加入CO和H2 O而發生的羥基羧化提供合成羧酸直接且方便的方法。
本發明之目的係提供在二異丁烯(DIBN)之鈀催化羥基羰基化中的良好轉換方法。
經由如申請專利範圍第1項所述之方法完成該目的。
方法,包含以下步驟:
a) 加入二異丁烯,
b) 加入含有鈀的化合物,其中該鈀係具有能形成錯合物之能力,
c) 加入配位體L1

d) 加入3,5,5-三甲基己酸及水,其中基於所使用的體積範圍為0.75/1.25至1.8/0.2之比率,
e) CO進料,
f) 加熱該反應混合物以使該二異丁烯轉變為該化合物P1

在該方法的一個變化形中,該化合物在方法步驟b)係選自於:PdCl2 、PdBr2 、Pd(acac)2 、Pd(dba)2 (dba =二苯乙烯基丙酮)、PdCl2 (CH3 CN)2
在該方法的一個變化形中,該方法步驟b)中之該化合物係Pd(acac)2
在該方法的一個變化形中,該方法包含該其他的反應步驟g):
g) 加入CF3 SO3 H。
在該方法的一個變化形中,在方法步驟f)中該反應混合物係加熱至80℃至160℃的範圍之溫度,
較佳係在100℃至140℃的範圍之溫度。
在該方法的一個變化形中,在方法步驟e)中進料該CO以使該反應在20巴至60巴之範圍的CO壓力下進行,較佳係30巴至50巴之範圍。
在該方法的一個變化形中,該3,5,5-三甲基己酸及水的比率係基於所使用的體積在1.0/1.0至1.8/0.2之範圍。
在該方法的一個變化形中,每1 mmol的二異丁烯加入3,5,5-三甲基己酸量係在0.3 ml至0.4 ml之範圍。
經由以下的工作實施例更詳細地闡述本發明。

在4 mL小燒瓶中加入[Pd(acac)2 ](3.05mg,0.25mol%)、L1(20.64mg,1.0mol%)和已烘箱乾燥的攪拌棒。然後用隔膜(PTFE塗覆的苯乙烯-丁二烯橡膠)和酚醛樹脂蓋密封小燒瓶。將小燒瓶抽真空並用氬氣再填充三次。H2 O (0.5 ml)、3,5,5-三甲基己酸(1.5 ml)、二異丁烯(DIBN)(4.0 mmol)和CF3 SO3 (7.5 mol%)經由針筒加入至小燒瓶。將小燒瓶至於合金板上,在氬氣氛下將其轉移至Parr Instruments的4560系列高壓滅菌器(300 ml)中。用CO沖洗高壓滅菌器三次後,在室溫下CO的壓力增加到40巴。反應在120℃下進行20小時。在反應結束時,將高壓滅菌器冷卻至室溫並小心地解壓。然後加入異辛烷(100 µl)作為內部標準品。經由GC分析測量轉化率。
以改變3,5,5-三甲基己酸/水的比率重複上述實驗。維持所有其他的參數。
該結果整理如下表中。

Claims (7)

  1. 一種方法,其包含以下步驟: a) 加入二異丁烯, b) 加入含有鈀的化合物,其中該鈀係具有能形成錯合物之能力, c) 加入配位體L1 d) 加入3,5,5-三甲基己酸及水,其中基於所使用的體積範圍為0.75/1.25至1.8/0.2之比率, e) CO進料, f) 加熱該反應混合物以使該二異丁烯轉變為該化合物P1
  2. 如申請專利範圍第1項所述之方法, 其中該化合物在方法步驟b)係選自於: PdCl2 、PdBr2 、Pd(acac)2 、Pd(dba)2 (dba =二苯乙烯基丙酮)、PdCl2 (CH3 CN)2
  3. 如申請專利範圍第1項及第2項任一項所述之方法, 其中該方法包含該其他的反應步驟g): g) 加入CF3 SO3 H。
  4. 如申請專利範圍第1項至第3項任一項所述之方法, 其中在方法步驟f)中該反應混合物係加熱至80℃至160℃的範圍之溫度。
  5. 如申請專利範圍第1項至第4項任一項所述之方法, 其中在方法步驟e)中進料該CO以使該反應在20巴至60巴之範圍的CO壓力下進行。
  6. 如申請專利範圍第1項至第5項任一項所述之方法, 其中該3,5,5-三甲基己酸及水的比率係基於所使用的體積在1.0/1.0至1.8/0.2之範圍。
  7. 如申請專利範圍第1項至第6項任一項所述之方法, 其中每1 mmol的二異丁烯加入3,5,5-三甲基己酸量係在0.3 ml至0.4 ml之範圍。
TW107145724A 2017-12-21 2018-12-18 O之比率來進行二異丁烯之鈀催化羥基羰基化的方法 TWI789468B (zh)

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