JPH0413335B2 - - Google Patents
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- Publication number
- JPH0413335B2 JPH0413335B2 JP7394082A JP7394082A JPH0413335B2 JP H0413335 B2 JPH0413335 B2 JP H0413335B2 JP 7394082 A JP7394082 A JP 7394082A JP 7394082 A JP7394082 A JP 7394082A JP H0413335 B2 JPH0413335 B2 JP H0413335B2
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- JP
- Japan
- Prior art keywords
- formula
- optically active
- reaction
- racemic
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】
本発明は式()および()で示される新規
な光学活性またはラセミのテトラリン誘導体の製
造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing novel optically active or racemic tetralin derivatives represented by formulas () and ().
〔式中、Rは低級アルコキシ基を表わす。〕
式()、()で示される化合物は医薬(例え
ば、特開昭54−44649号公報)、農薬等の中間原料
として有用な化合物である。 [In the formula, R represents a lower alkoxy group. ] The compounds represented by the formulas () and () are useful as intermediate raw materials for pharmaceuticals (for example, JP-A-54-44649), agricultural chemicals, and the like.
本発明はまた式()で示される光学活性また
はラセミのテトラリン誘導体の製造方法をも提供
するものである。すなわち光学活性またはラセミ
の4−(2−メチル−1−プロペニル)−5,5−
ジメチル−テトラヒドロ−2−フラノン、通称パ
イロシンをフリーデルクラフツ触媒の存在下芳香
族エーテルと反応させることを特徴とする式
()で示される化合物の製造方法である。 The present invention also provides a method for producing an optically active or racemic tetralin derivative represented by formula (). i.e. optically active or racemic 4-(2-methyl-1-propenyl)-5,5-
This is a method for producing a compound represented by formula (), which comprises reacting dimethyl-tetrahydro-2-furanone, commonly known as pyrosine, with an aromatic ether in the presence of a Friedel-Crafts catalyst.
本発明者らはパイロシンと芳香族エーテルをフ
リーデルクラフツ触媒の存在下に反応させること
により、式()で示される新規化合物を一段で
高収率で製造する方法を開発した。芳香族エーテ
ルとしてはアニソール、フエニルエチルエーテ
ル、フエニルプロピルエーテル、フエニルブチル
エーテル等のアルコキシ置換ベンゼンを用いる。 The present inventors have developed a method for producing a novel compound represented by formula () in one step with high yield by reacting pyrosine and an aromatic ether in the presence of a Friedel-Crafts catalyst. As the aromatic ether, alkoxy-substituted benzenes such as anisole, phenyl ethyl ether, phenyl propyl ether, and phenyl butyl ether are used.
本反応を促進するに有効なルイス酸としては、
塩化アルミニウム、塩化第二鉄などの一般にフリ
ーデルクラフツ反応に用いるものを使用する。用
いる量は通常2倍乃至8倍当量、好ましくは2倍
乃至2.4倍当量である。 Lewis acids effective in promoting this reaction include:
Those commonly used in Friedel-Crafts reactions, such as aluminum chloride and ferric chloride, are used. The amount used is usually 2 to 8 times equivalent, preferably 2 to 2.4 times equivalent.
本発明方法は溶媒を用いなくとも実施できるが
本反応を本質的に阻害しない溶媒を用いて行うこ
ともできる。このような溶媒としては塩化メチレ
ン、ジクロロエタン等が挙げられる。 Although the method of the present invention can be carried out without using a solvent, it can also be carried out using a solvent that does not essentially inhibit the reaction. Examples of such solvents include methylene chloride and dichloroethane.
反応温度は通常−20℃から芳香族エーテルの沸
点下で充分である。 The reaction temperature is usually -20°C to below the boiling point of the aromatic ether.
上記反応式において化合物(A)を優位に生成
させるには反応温度を下げる方が好ましく、その
温度は−10℃乃至30℃が実際的である。 In order to predominantly produce compound (A) in the above reaction formula, it is preferable to lower the reaction temperature, and the practical temperature is -10°C to 30°C.
反応時間は反応条件によつて異なるが、通常5
分から10時間で目的を達することができる。反応
の進行度は反応液の一部を採取し、ガスクロマト
グラフイー、薄層クロマトグラフイー等の分析手
段によつて知ることができる。 The reaction time varies depending on the reaction conditions, but is usually 5
You can reach your goal in minutes to 10 hours. The progress of the reaction can be determined by sampling a portion of the reaction solution and analyzing it by gas chromatography, thin layer chromatography, or the like.
本反応において光学活性パイロシンを用いれば
生成する式()で示される化合物も光学活性を
有し、光学活性は保持される。 If optically active pyrosine is used in this reaction, the resulting compound represented by the formula () also has optical activity, and the optical activity is maintained.
一般に生物活性化合物は、そのキラリテイによ
り活性に差が現われる。このため光学活性化合物
を製造する技術を開発することは重要な意義を有
する。本発明の化合物は、所望により光学活性体
として得られることになる。かかる点からも本発
明は格別の特徴を有するものである。 Generally, biologically active compounds exhibit differences in activity depending on their chirality. Therefore, it is of great significance to develop a technology for producing optically active compounds. The compound of the present invention can be obtained as an optically active compound if desired. From this point of view as well, the present invention has special features.
本発明の方法で用いる原料のパイロシンは、菊
酸の加熱開裂反応(Botyu Kagaku,15,1
(1950))によつて、あるいは2,5−ジメチル−
2,4−ヘキサジエンを酸化してモノエポキサイ
ドとし、ナトリウム化マロン酸エステルと反応さ
せた後加水分解する方法(Tetrahedron
Letters,1845〜1846(1978)等によつて得られ
る。また光学活性なパイロシンは光学活性な菊酸
を加熱することにより合成することができる
(Agr.Biol.Chem.,34,1115(1970))。 The raw material pyrosine used in the method of the present invention is a thermal cleavage reaction of chrysanthemum acid (Botyu Kagaku, 15, 1).
(1950)) or 2,5-dimethyl-
A method in which 2,4-hexadiene is oxidized to form a monoepoxide, reacted with sodified malonic acid ester, and then hydrolyzed (Tetrahedron).
Letters, 1845-1846 (1978), etc. Furthermore, optically active pyrosine can be synthesized by heating optically active chrysanthemum acid (Agr. Biol. Chem., 34, 1115 (1970)).
以上説明した如く、本発明によつて式()で
示される新規化合物及びその製造が可能となるの
みならず、光学活性体として得ることが可能とな
る。次に実施例によつて本発明の方法を説明す
る。 As explained above, the present invention not only enables the novel compound represented by the formula () and its production, but also enables it to be obtained as an optically active compound. The method of the invention will now be explained by way of examples.
実施例
無水塩化アルミニウム7.32g(54.9mmol)に
パイロシン4.19g(24.95mmol)、アニソール2.70
g(24.95mmol)のエチレンジクロリド溶液(30
ml)をゆつくり滴下した。徐々に昇温し70℃で30
分間撹拌した。冷却後希塩酸を加え、有機層を分
液後、苛性ソーダ水溶液で抽出した。水層を塩酸
で酸性とし、酢酸エチルで抽出した。飽和食塩水
で洗浄、芒硝で乾燥後減圧下溶媒を留去した。シ
リカゲルカラムで精製し4.31g(15.6mmol、62.6
%)の6及び7−メトキシ−1,1,4,4−テ
トラメチル−1,2,3,4−テトラヒドロナフ
タレン−2−酢酸を得た。Example 7.32 g (54.9 mmol) of anhydrous aluminum chloride, 4.19 g (24.95 mmol) of pyrosin, 2.70 g of anisole
g (24.95 mmol) of ethylene dichloride solution (30
ml) was slowly added dropwise. Gradually increase the temperature to 70℃ to 30℃
Stir for a minute. After cooling, dilute hydrochloric acid was added, and the organic layer was separated and extracted with an aqueous solution of caustic soda. The aqueous layer was made acidic with hydrochloric acid and extracted with ethyl acetate. After washing with saturated brine and drying with Glauber's salt, the solvent was distilled off under reduced pressure. Purified with a silica gel column and 4.31g (15.6mmol, 62.6
%) of 6 and 7-methoxy-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthalene-2-acetic acid were obtained.
NMR(CDCl3)δ(ppm)=1.08,1.10(S,3H),
1.26,1.29,1.31,1.34,1.35(S,9H),1.52
〜1.72(2H、m),2.06〜2.40(2H、m),2.66
〜2.74(1H、m),6.70〜7.28(4H、m),
13CNMRスペクトルから
6−メトキシ−1、1、4、4−テトラメチル−
1、2、3、4−テトラヒドロナフタレン−2−
酢酸と7−メトキシ−1、1、4、4−テトラメ
チル−1、2、3、4−テトラヒドロナフタレン
−2−酢酸との比は46:54であつた。NMR (CDCl 3 ) δ (ppm) = 1.08, 1.10 (S, 3H),
1.26, 1.29, 1.31, 1.34, 1.35 (S, 9H), 1.52
~1.72 (2H, m), 2.06 ~ 2.40 (2H, m), 2.66
~2.74 (1H, m), 6.70 ~ 7.28 (4H, m),
From the 13CNMR spectrum, 6-methoxy-1,1,4,4-tetramethyl-
1,2,3,4-tetrahydronaphthalene-2-
The ratio of acetic acid to 7-methoxy-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthalene-2-acetic acid was 46:54.
Claims (1)
1−プロペニル)−5,5−ジメチルテトラヒド
ロ−2−フラノンとアルコキシ置換ベンゼンをフ
リーデルクラフツ触媒の存在下に反応させること
を特徴とする式()および式() 〔式中、Rは低級アルコキシ基を表わす。〕 で示される光学活性またはラセミのテトラリン誘
導体の製造方法。[Claims] 1. Optically active or racemic 4-(2-methyl-
Formula () and Formula () characterized in that 1-propenyl)-5,5-dimethyltetrahydro-2-furanone and alkoxy-substituted benzene are reacted in the presence of a Friedel-Crafts catalyst. [In the formula, R represents a lower alkoxy group. ] A method for producing an optically active or racemic tetralin derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7394082A JPS58192849A (en) | 1982-04-30 | 1982-04-30 | Tetralin derivative and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7394082A JPS58192849A (en) | 1982-04-30 | 1982-04-30 | Tetralin derivative and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58192849A JPS58192849A (en) | 1983-11-10 |
| JPH0413335B2 true JPH0413335B2 (en) | 1992-03-09 |
Family
ID=13532608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7394082A Granted JPS58192849A (en) | 1982-04-30 | 1982-04-30 | Tetralin derivative and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58192849A (en) |
-
1982
- 1982-04-30 JP JP7394082A patent/JPS58192849A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58192849A (en) | 1983-11-10 |
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