CN1257857A - 四氢化荼类化合物、其制备方法和其用途 - Google Patents

四氢化荼类化合物、其制备方法和其用途 Download PDF

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CN1257857A
CN1257857A CN99125832A CN99125832A CN1257857A CN 1257857 A CN1257857 A CN 1257857A CN 99125832 A CN99125832 A CN 99125832A CN 99125832 A CN99125832 A CN 99125832A CN 1257857 A CN1257857 A CN 1257857A
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彼得·吉盖克斯
汉斯-乌尔里克·冈曾巴赫
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Abstract

式Ⅰ化合物在芳香组合物中用作介体。式Ⅰ中,R1为氢或甲基,R2为烷基。

Description

四氢化萘类化合物、其制备方法和其用途
本发明涉及新型四氢化萘类化合物(hydronaphthalenes)及其制备方法和用途。
芳香组合物由具有不同挥发性的多种组分组成。在贮存和使用中,挥发性强的化合物蒸发较快,从而改变了组合物的性质。为了在更长时间内保持这些组合物的芳香性质,必须采取措施以防止挥发性强的组分较早蒸发。一般将所谓的“介体”加入组合物中。介体化合物和芳香组合物中挥发性强的组分形成疏松的络合物,从而减少了其挥发。介体化合物可以是无味的,也可具有气味,该气味会影响芳香组合物的香味。对于香料商来说,易使用无味的介体,因为它们不产生额外的气味,从而所用剂量在较宽范围都不会改变芳香的性质。另外,无味的介体可用于多种不同的芳香组合物。
现在已经发现式I的化合物为可用作介体的无味化合物:
Figure A9912583200041
其中R1为氢或甲基,R2为烷基,特别是C1-12-烷基,并优选C1-4-烷基。
如熟练技术人员所知,由于最初引入的酰基的强钝化作用,邻二酰基芳烃不能够通过母芳烃的二次Friedel-Crafts-酰化反应制备。
原则上,邻酰基苯甲醛可从邻酰基肉桂酸制备,但是,所需的氧化步骤会产生废过渡金属(E.Berner,Acta Chemica Scand.Ser.B,729(1982))。另一种可能是从乙酰基庚三烯制备,但乙酰基庚三烯不易得到,且在最终步骤中要求低产率的空气氧化反应,而该步骤具有潜在危险(M.Senguel,J.Chem.Soc.Perkin Trans.I,2071(1997))。
因此,需要一种避免已知方法的缺点,用于制备式I新化合物的新方法。
已经发现,下述采用易得原料的5步法可得到所需的式I化合物,并且具有良好收率。式中,R1为氢或甲基,Hal代表卤素,特别是Br或Cl,R1为烷基,优选低级烷基,特别是甲基,或者R1-R1也可代表二价烷基残基,从而生成二氧茂烷环,R2为烷基,特别是C1-12-烷基,并优选C1-4-烷基。
在步骤1中,卤代苯,优选溴苯或氯苯,和2,5-二卤-2,5-二甲基己烷稠和。稠和反应在少量路易斯酸催化剂-如氯化铝、氯化铁、氯化铋-存在下进行,这里仅列出许多可进行芳烃的烷基化反应的催化剂的一些。以这种方式获得的取代四氢化萘衍生物IV可以被分离及纯化。引入酰基(步骤2)是通过在Friedel-Crafts-酰化催化剂存在下,四氢化萘IV和活化的酸衍生物的反应来进行的。例如酰基氯或酸酐可用作活化的酸衍生物。催化剂也可为上述的路易斯酸催化剂。为了使步骤更经济,步骤1和2也可不需分离IV就进行。为了避免不希望的副反应,步骤1中催化剂的量必须保持较少并恰好在酰化步骤2前加入另外的催化剂。由于V的酰基不能与Grignard反应(步骤4)相容,因此它要以缩酮形式被保护。这可通过V和醇或邻位酯反应,或通过缩酮交换作用(transketalisation)进行,通过用酸-如路易斯酸或质子酸来催化。酸催化剂的例子有:磺酸、硫酸、粘土等。除了一元醇,二元醇-例如乙二醇-也可使用。通过用镁、锂或烷基锂-例如丁基锂-处理VI,可将化合物VII转变为有机金属化合物,例如锂或镁的衍生物。考虑到经济原因,优选使用镁。甲酰基优选通过有机金属中间体和甲酸或其衍生物反应引入,最容易且经济的是通过甲酰胺类化合物,如二甲基甲酰胺、N-烷基-甲酰苯胺或甲酰基吗啉。尽管分离甲酰基-缩酮VII是可能的,但通过在酸性pH值下用水处理反应混合物使之水解是更实际和经济的,而无需任何其它处理。
式I的化合物是无味的,并在不同的芳香组合物中显示了优异的介体性质,从而达到改进的线性性质,即,芳香性质的高稳定性。这些化合物可用于多种芳香组合物。
下列实施例将阐述本发明,但不局限于此。
实施例1
1,1,4,4-四甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘
在10℃,经1小时,将溶于480ml二氯乙烷中的219.6克2,5-二氯-2,2,5,5-四甲基-己烷加入到悬浮在217克溴苯的8.4克氯化铝中。搅拌20分钟后,加入204克氯化铝,再加入127克乙酰氯。随后搅料在0℃下搅拌4小时,并在室温下搅拌12小时后,将深色物质倒入2升冰水中。有机相用水洗涤两次,干燥并蒸干。蒸馏残余物可得到240.6克1,1,4,4-四甲基-6-乙酰基-7-溴-1,2,3,4-四氢化萘。
沸点0.08Torr:148-152℃
NMR(CDCl3):7.5(s,1H),7.45(s,1H),2.63(s,3H),1.67(s,4H),1.27(s,12H)。
240.6克1,1,4,4-四甲基-6-乙酰基-7-溴-1,2,3,4-四氢化萘、96.7克乙二醇、11克Amberlyst 15和120ml己烷在装有Dean-Stark脱水器的烧瓶中回流过夜。再加入50克乙二醇继续回流12小时。反应混合物用乙醚稀释并滤掉催化剂。溶液用1升含有2克碳酸钠的水洗涤,再用水洗涤两次,干燥并蒸干。从己烷中结晶残余物得到137克1,1,4,4-四甲基-6-乙酰基-7-溴-1,2,3,4-四氢化萘-乙二醇缩酮。
NMR(CDCl3):7.55(s,1H),7.47(s,1H),3.97-4.15(m,2H),3.69-3.85(m,2H),1.82(s,3H),1.65(s,4H),1.25(s,12H)。
向1.02克悬浮在6ml四氢呋喃的镁屑中缓慢加入310克溴乙烷。当Grignard反应开始时,在回流温度下几分钟内加入溶解于四氢呋喃的10.59克1,1,4,4-四甲基-6-乙酰基-7-溴-1,2,3,4-四氢化萘-乙二醇缩酮。再回流2小时后,在0℃下加入4.5克N,N-二甲基甲酰胺,然后混合物在该温度下搅拌3小时。随后反应混合物回流3小时。然后反应混合物倒入到2NHCl中并用乙醚萃取。有机相用水洗涤,蒸干并用60ml 2NHCl/ml水回流2小时。在常规处理后,可得到8.38克1,1,4,4-四甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘。
熔点116℃:(己烷)
NMR(CDCl3):7.84(s,1H),7.63(s,+H),2.63(s,1H),1.71(s,4H),1.33(s,12H)。
实施例2
1,1,2,4,4-五甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘
根据实施例1,通过1,1,2,4,4-五甲基-7-溴-1,2,3,4-四氢化萘的酰化反应、乙二醇的缩酮化反应和N-甲酰基吗啉的Grignard反应,制备该化合物。
NMR(CDCl3):10.2(s,1H),7.9(s,1H),7.62(s,1H),2.64(s,3H),1.8-2.0(m,1H),1.68(t,2H),1.45(dxd,1H),1.38(s,3H),1.36(s,3H),1.10(s,3H),1.02(d,3H)。
实施例3
1,1,4,4-四甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘用作介体
可制备一种霉菌性口炎型芳香组合物,该组合物由下列物质组成:
  组分     份
  吲哚     5
  乙酸苄酯     7
  顺乙酸3-己烯酯(10%)     7
  Rose氧化物(1%)     5
  二氢茉莉酮酸甲酯(Hedione)     10
  铃兰醛     20
  顺苯甲酸3-己烯酯     15
  橙花醇     15
  顺3-己烯醇     10
  肉桂醇     30
  醋酸香茅酯     30
  玫瑰醇     30
  苯基乙醇     20
  香茅醇     75
  苯甲酸苄酯     70
  香叶醇     70
    醋酸香叶酯   80
    橙花叔醇   80
    法呢醇   120
    苯甲醇   150
    羟基香茅醛   50
    缩二丙二醇   101
加入标题化合物达到了芳香组合物线性性质的改进,例如芳香组合物的香味可保持更长的时间。
实施例4
1,1,2,4,4-五甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘用作介体
标题化合物加入到根据实施例3的霉菌性口炎型芳香组合物达到了芳香化组合物线性性质的改进,例如芳香组合物的香味可保持更长的时间。

Claims (13)

1.式I的化合物:
Figure A9912583200021
其中R1为氢或甲基,R2为烷基。
2.如权利要求1所述的式I化合物,其中R2为C1-12-烷基,优选C1-4-烷基。
3. 1,1,4,4-四甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘。
4. 1,1,2,4,4-五甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘。
5.制备式I化合物的方法,其中R1为氢或甲基,R2为烷基,
该方法包括式II化合物
Figure A9912583200023
和式III化合物进行反应,
Figure A9912583200024
III式中Hal为卤素,酰化所得的式IV的四氢化萘
以得到式V化合物,
式V化合物和醇或乙二醇反应得到式VI缩酮,其中R1为烷基残基或R1-R1代表二价烷基残基,从而形成二氧茂烷环,然后化合物VI和镁、式VIII的甲酰胺反应得到式I化合物,
Figure A9912583200033
其中R3和R4为两个有机残基或成环。
6.如权利要求5所述的方法,其中Hal选自氯或溴。
7.如权利要求5或6的方法,其中化合物IV和或VII在反应期间不需回收。
8.如权利要求5-7任一所述的方法,其中式VIII化合物选自二甲基甲酰胺、N-甲酰基吗啉和N-甲基-甲酰苯胺。
9.式I化合物在芳香组合物中作为介体的用途。
10.含有一种或多种作为介体的式I化合物的芳香组合物。
11.如权利要求10所述的芳香组合物,含有作为介体的1,1,4,4-四甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘。
12.如权利要求10所述的芳香组合物含有作为介体的1,1,2,4,4-五甲基-6-乙酰基-7-甲酰基-1,2,3,4-四氢化萘。
13.如权利要求10-12任一所述的芳香组合物,含有高挥发性醇。
CN99125832A 1998-12-15 1999-11-29 四氢化荼类化合物、其制备方法和其用途 Pending CN1257857A (zh)

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US7257300B2 (en) * 2004-06-03 2007-08-14 Samsung Electronics Co., Ltd. Method for reducing hydrogen sensitivity of optical fiber
CN101200419B (zh) * 2007-11-22 2010-12-22 上海力智生化科技有限公司 一种合成吐纳麝香的方法
CN102050715A (zh) * 2011-01-07 2011-05-11 河南科技大学 一种工业吐纳麝香的制备方法
CN102050715B (zh) * 2011-01-07 2013-10-30 河南科技大学 一种工业吐纳麝香的制备方法
CN105007885A (zh) * 2013-03-13 2015-10-28 荷兰联合利华有限公司 个人护理组合物中某些芳香组分的延长递送
CN105007885B (zh) * 2013-03-13 2018-06-26 荷兰联合利华有限公司 个人护理组合物中某些芳香组分的延长递送

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