JPH0233033B2 - - Google Patents

Info

Publication number
JPH0233033B2
JPH0233033B2 JP55126084A JP12608480A JPH0233033B2 JP H0233033 B2 JPH0233033 B2 JP H0233033B2 JP 55126084 A JP55126084 A JP 55126084A JP 12608480 A JP12608480 A JP 12608480A JP H0233033 B2 JPH0233033 B2 JP H0233033B2
Authority
JP
Japan
Prior art keywords
acid
compound
formula
urea
temperature
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.)
Expired - Lifetime
Application number
JP55126084A
Other languages
Japanese (ja)
Other versions
JPS5750970A (en
Inventor
Kyonori Yokogoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Permachem Asia Ltd
Original Assignee
Permachem Asia Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Permachem Asia Ltd filed Critical Permachem Asia Ltd
Priority to JP12608480A priority Critical patent/JPS5750970A/en
Publication of JPS5750970A publication Critical patent/JPS5750970A/en
Publication of JPH0233033B2 publication Critical patent/JPH0233033B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】 本発明は、次式 で表わされる5―ウレイドヒダントインの新規な
製法に関する。
[Detailed Description of the Invention] The present invention is based on the following formula This invention relates to a new method for producing 5-ureidohydantoin represented by

式の化合物及びそのアルミニウム誘導体は顕
著な細胞賦活作用及び細胞増殖作用を有し、副作
用のない潰瘍治療剤及び予防剤として重要な医薬
品である。
The compound of the formula and its aluminum derivatives have remarkable cell activating and cell proliferating effects, and are important pharmaceutical agents as ulcer treatment and prevention agents without side effects.

式の化合物の製法としては、例えばグリオキ
サールを硝酸酸化してグリオキシル酸となし、こ
の酸よりも酸度の強い酸を触媒として温度65〜95
℃で尿素と反応させる方法(特公昭46―2095号公
報参照)、グリオキサールを硫酸酸化して得られ
るグリオキシル酸又はそのアルカリ金属塩水溶液
に鉱酸を加えて予め温度50〜100℃において20〜
120分間加熱処理したのち、尿素と反応させる方
法(特公昭50―11918号公報参照)等が知られて
いる。しかし、これらの方法では、グリオキサー
ルを酸化して得られるグリオキシル酸を工業的に
精製することは不可能に近く、酸化副生物及び未
反応物を含んだまま原料として使用せざるをえな
いため、目的を純品として得ることは極めて困難
である。また、反応条件範囲が非常に狭く、工業
的方法においての調整は至難である。
For example, glyoxal is oxidized with nitric acid to produce glyoxylic acid, and an acid with stronger acidity than this acid is used as a catalyst to produce the compound of the formula at a temperature of 65 to 95%.
A method in which glyoxal is reacted with urea at a temperature of 50 to 100 degrees Celsius (see Japanese Patent Publication No. 46-2095).
A method is known in which the material is heated for 120 minutes and then reacted with urea (see Japanese Patent Publication No. 11918/1983). However, with these methods, it is almost impossible to industrially purify glyoxylic acid obtained by oxidizing glyoxal, and it has to be used as a raw material containing oxidized by-products and unreacted substances. It is extremely difficult to obtain the intended purpose as a pure product. Furthermore, the range of reaction conditions is very narrow, making adjustment in industrial methods extremely difficult.

本発明者は、従来法の欠点を解決し、工業化容
易な製法を開発するため種々研究を重ねた結果、
一般式 OHC―COOR …… (式中Rはアルキル基を示す)で表わされる化
合物を縮合剤の存在下で尿素と反応させることに
より式の目的化合物が高純度で収率よく得られ
ることを見出した。
The inventor of the present invention has conducted various researches in order to solve the drawbacks of conventional methods and develop a manufacturing method that is easy to industrialize.
It has been discovered that by reacting a compound represented by the general formula OHC-COOR (in which R represents an alkyl group) with urea in the presence of a condensing agent, the target compound of the formula can be obtained with high purity and good yield. Ta.

出発物質である式の化合物は、近年修酸エス
テル類を還元することにより容易に製造でき、再
結晶などの精製方法により高純度のものを得るこ
とができる。式の化合物の置換基Rのためのア
ルキル基としては、メチル基、エチル基、プロピ
ル基、ブチル基等があげられる。縮合剤として
は、酸好ましくは鉱酸例えば塩酸、硫酸、硝酸等
チオハライド例えばクロルスルフオン酸、メタン
スルフオン酸クロリド、ベンゼンスルフオン酸ク
ロリド、塩化チオニル、塩化スルフリル等、無機
アルカリ例えば苛性カリ、苛性ソーダ、炭酸カリ
ウム、炭酸水素ナトリウム等、アルコラート例え
ばナトリウムメチラート、ナトリウムエチラート
等を用いることができる。
The compound of the formula, which is a starting material, can be easily produced by reducing oxalate esters in recent years, and can be obtained with high purity by purification methods such as recrystallization. Examples of the alkyl group for the substituent R in the compound of formula include methyl group, ethyl group, propyl group, butyl group, and the like. Condensing agents include acids, preferably mineral acids such as hydrochloric acid, sulfuric acid, nitric acid, thiohalides such as chlorosulfonic acid, methanesulfonic acid chloride, benzenesulfonic acid chloride, thionyl chloride, sulfuryl chloride, inorganic alkalis such as caustic potash, caustic soda, Potassium carbonate, sodium hydrogen carbonate, etc., alcoholates such as sodium methylate, sodium ethylate, etc. can be used.

これらの縮合剤の使用量は、式の化合物1当
量に対して0.5〜4.0当量の範囲が好ましい。
The amount of these condensing agents used is preferably in the range of 0.5 to 4.0 equivalents per equivalent of the compound of the formula.

本発明を実施するに際しては、好ましくは溶媒
の存在下に式の化合物と尿素を反応させる。
In practicing the invention, a compound of formula and urea are reacted, preferably in the presence of a solvent.

溶媒としては、水又はアルコール類、グリコー
ル類、アセトニトリル、ジメチルホルムアミド等
の極性溶媒が好ましい。
As the solvent, water or polar solvents such as alcohols, glycols, acetonitrile, and dimethylformamide are preferred.

反応温度は反応混合物の沸騰温度以下、好まし
くは、55〜85℃であり、数十分ないし十数時間で
反応が終了する。反応の進行は、目的物が析出
し、白濁することにより確認できる。
The reaction temperature is below the boiling temperature of the reaction mixture, preferably 55 to 85°C, and the reaction is completed in several tens of minutes to more than ten hours. Progress of the reaction can be confirmed by precipitation of the target product and cloudiness.

実施例 1 グリオキシル酸メチルエステル8.8g及び尿素
18.0gを水―エタノール(2:1)60mlに溶解し、
次いで35%純塩酸20mlを加えて水浴上でゆるやか
に還流する。1時間を経過するころより内液が白
濁しはじめ、次第に結晶が増大していく。
Example 1 8.8g glyoxylic acid methyl ester and urea
Dissolve 18.0g in 60ml of water-ethanol (2:1),
Next, add 20 ml of 35% pure hydrochloric acid and gently reflux on a water bath. After 1 hour, the internal fluid begins to become cloudy and the crystals gradually increase.

約4時間反応させたのち、内温を室温まで冷却
し、析出した結晶を取する。この結晶を再結晶
することなくそのまま乾燥すると、目的物11.8g
(収率約74.7%)が得られる。
After reacting for about 4 hours, the internal temperature was cooled to room temperature and the precipitated crystals were collected. When these crystals are dried as they are without recrystallization, 11.8g of the target product is obtained.
(yield about 74.7%).

融点:224℃(分解) 元素分析値:C4H6O3N4=158.1として C H N 実測値(%) 30.28 3.77 35.39 理論値(%) 30.39 3.82 35.43 純度(N定量法):99.8% 赤外部吸収スペクトル νKBr naxcm-1:3450、3350、3050、1780、1660、
1540、1180 実施 2 尿素15gを水80mlに溶解し、水浴上で75〜80℃
に加温する。次いでグリオキシル酸エチルエステ
ル10g及び微粉末炭酸カリウム14gを加え、約6
時間、同温度に加温し、撹拌する。以下実施例1
と同様に処理すると、同一化合物12g(収率約76
%)が得られる。
Melting point: 224℃ (decomposition) Elemental analysis value: C 4 H 6 O 3 N 4 = 158.1 C H N Actual value (%) 30.28 3.77 35.39 Theoretical value (%) 30.39 3.82 35.43 Purity (N quantitative method): 99.8% Infrared absorption spectrum ν KBr nax cm -1 : 3450, 3350, 3050, 1780, 1660,
1540, 1180 Implementation 2 Dissolve 15g of urea in 80ml of water and heat at 75-80℃ on a water bath.
Warm to. Next, 10 g of glyoxylic acid ethyl ester and 14 g of finely powdered potassium carbonate were added, and about 6
Heat to the same temperature for an hour and stir. Example 1 below
When treated in the same manner as above, 12g of the same compound (yield approx. 76
%) is obtained.

実施例 3 グリオキシル酸エチルエステル10g中に、クロ
ルスルホン酸23.2gを極めてゆつくりと滴下する。
滴下終了後、尿素18gを粉末状態のまま加えたの
ち、約30分間60〜70℃に加温し、撹拌する。以下
実施例1と同様に処理すると、同一化合物11.3g
(収率約71.5%)が得られる。
Example 3 23.2 g of chlorosulfonic acid is added dropwise very slowly into 10 g of glyoxylic acid ethyl ester.
After dropping, add 18 g of urea in powder form, then heat to 60-70°C for about 30 minutes and stir. When treated in the same manner as in Example 1, 11.3g of the same compound was obtained.
(yield about 71.5%).

Claims (1)

【特許請求の範囲】 1 一般式 OHC―COOR (式中Rはアルキル基を示す)で表わされる化
合物を縮合剤の存在下で尿素と反応させることを
特徴とする、次式 で表わされる5―ウレイドヒダントインの製法。
[Claims] 1. A compound represented by the general formula OHC-COOR (in the formula, R represents an alkyl group), which is characterized by reacting with urea in the presence of a condensing agent, A method for producing 5-ureidohydantoin represented by
JP12608480A 1980-09-12 1980-09-12 Preparation of 5-ureidohydantoin Granted JPS5750970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12608480A JPS5750970A (en) 1980-09-12 1980-09-12 Preparation of 5-ureidohydantoin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12608480A JPS5750970A (en) 1980-09-12 1980-09-12 Preparation of 5-ureidohydantoin

Publications (2)

Publication Number Publication Date
JPS5750970A JPS5750970A (en) 1982-03-25
JPH0233033B2 true JPH0233033B2 (en) 1990-07-25

Family

ID=14926201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12608480A Granted JPS5750970A (en) 1980-09-12 1980-09-12 Preparation of 5-ureidohydantoin

Country Status (1)

Country Link
JP (1) JPS5750970A (en)

Also Published As

Publication number Publication date
JPS5750970A (en) 1982-03-25

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