JPS62273937A - Production of 1-iodinated ethyl alkyl carbonate - Google Patents

Production of 1-iodinated ethyl alkyl carbonate

Info

Publication number
JPS62273937A
JPS62273937A JP61116893A JP11689386A JPS62273937A JP S62273937 A JPS62273937 A JP S62273937A JP 61116893 A JP61116893 A JP 61116893A JP 11689386 A JP11689386 A JP 11689386A JP S62273937 A JPS62273937 A JP S62273937A
Authority
JP
Japan
Prior art keywords
acid
alkyl carbonate
calcium phosphate
formula
chloroethyl
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.)
Granted
Application number
JP61116893A
Other languages
Japanese (ja)
Other versions
JPH0615509B2 (en
Inventor
Seishi Iijima
飯島 清史
Sueo Shiozawa
塩沢 末男
Tomio Sasao
笹尾 富夫
Naofumi Kishi
直文 貴志
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.)
Sankyo Co Ltd
Original Assignee
Sankyo Co 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 Sankyo Co Ltd filed Critical Sankyo Co Ltd
Priority to JP61116893A priority Critical patent/JPH0615509B2/en
Publication of JPS62273937A publication Critical patent/JPS62273937A/en
Publication of JPH0615509B2 publication Critical patent/JPH0615509B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:To produce the titled compound useful as a raw material for penicillin derivative, in high yield, by using 1-chloroethyl alkyl carbonate as a raw material and reacting with iodinating agent in the presence of a protonic acid and calcium phosphate. CONSTITUTION:The objective 1-iodinated ethyl alkyl carbonate of formula II is produced by reacting a 1-chloroethyl alkyl carbonate of formula CH3 CHClOCOOR (R is lower alkyl) with an iodinating agent (especially preferably an alkali metal iodide) in the presence of a protonic acid (e.g. methanesulfonic acid, formic acid, hydrochloric acid, etc.) and calcium phosphate. EFFECT:The process can be carried out without using a Lewis acid catalyst which is hardly handleable owing to its hygroscopicity.

Description

【発明の詳細な説明】 3−1    目   的 バカンピシリンは、3位にエステル基 −CO2CH−OCO2C2H5t−有するペニシリン
銹導体であさH5 9、経口吸収at有する有用な抗菌剤である。
Detailed Description of the Invention 3-1 Purpose Bacampicillin is a penicillin conductor having an ester group -CO2CH-OCO2C2H5t- at the 3-position and is a useful antibacterial agent with an oral absorption rate of H59.

このエステル化ニは1−ヨードエチル エチルカーボネ
ートヲ使用するのが有利でおることが知られている。
It is known that it is advantageous to use 1-iodoethyl ethyl carbonate as the ester.

本発明は、1−ヨードエチル エチルカーボネートなど
の1−ヨードエチル アルキルカーボネート(2)の改
良製法である。
The present invention is an improved method for producing 1-iodoethyl alkyl carbonates (2) such as 1-iodoethyl ethyl carbonate.

最近、t−ヨードエチル アルキルカーボネ−) (2
)の製法に関して次の式で示される方法が報告されてい
る(特開昭81−40246号公@)。
Recently, t-iodoethyl alkyl carbonate) (2
) has been reported (Japanese Unexamined Patent Application Publication No. 81-40246@) as shown by the following formula.

この方法により、1−クロロエチル アルキルカーボネ
ート(1)にルイス酸几とえば塩化亜鉛の存在下、ヨウ
素化剤たとえばヨウ化ナトリウムを反応させると、1−
ヨードエチル アルキルカーボネート(2)が得られる
According to this method, when 1-chloroethyl alkyl carbonate (1) is reacted with an iodizing agent such as sodium iodide in the presence of a Lewis acid such as zinc chloride, 1-chloroethyl alkyl carbonate (1) is reacted with an iodizing agent such as sodium iodide.
Iodoethyl alkyl carbonate (2) is obtained.

この方法は、吸湿性のため取扱いが困難なルイス酸を触
媒として用いることから、工業的な農法としては問題が
ある。
This method is problematic as an industrial farming method because it uses a Lewis acid as a catalyst, which is difficult to handle due to its hygroscopic nature.

発明者等は、ルイスI[−用いなくても好収率fl−:
1l−)”エチル アルキルヵーポ、?、 −ト(2)
が得られる方法を見出し、本発明を完成した。
The inventors have demonstrated that Lewis I [- with good yield fl-:
1l-)”Ethyl alkyl capo, ?, -t (2)
The present invention was completed by discovering a method for obtaining the following.

3−2構成 本発明は式 %式%(1) を有する化合物をプロトン酸およびリン酸カルシウムの
存在下、ヨウ素化剤と反応させることを特徴とする1式 %式%(2) を有する1−ヨウ化エチル アルキルカーボネートの製
法である。
3-2 Structure The present invention is characterized in that a compound having the formula % (1) is reacted with an iodinating agent in the presence of a protic acid and calcium phosphate. This is a method for producing ethyl alkyl carbonate.

上記式中、Rは低級アルキル基を示す。In the above formula, R represents a lower alkyl group.

Rの低級アルキル基は、たとえばメチル、エチル、プロ
ピル、インプロピル、ブチル、イソブチル、8−ブチル
ま友はt−ブチルがあげられる。
Examples of the lower alkyl group for R include methyl, ethyl, propyl, inpropyl, butyl, isobutyl, 8-butyl, and t-butyl.

もしくはトルエンスルホン酸のようなスルホン酸;ギ酸
、酢酸もしくはプロピオン酸のような脂肪酸または塩酸
、硫酸、硝酸、IJ ン酸もしくはヨウ化水素酸のよう
な鉱酸があげられ、好適にはスルホン酸がめげられる。
or sulfonic acids such as toluenesulfonic acid; fatty acids such as formic acid, acetic acid or propionic acid; or mineral acids such as hydrochloric acid, sulfuric acid, nitric acid, IJ acid or hydroiodic acid, preferably sulfonic acids. I'm disappointed.

上述したリン酸カルシウムは次とえばCa5(POa)
2、[C’a3(POah〕5Ca(OH)2、Ca(
POs)21 次はCa2P2O7があげられ、好まし
くはCa3(PO4)2 ’! 7’r−は[Ca5(
POt)2]5Ca(OH)2  があげられる。
The above-mentioned calcium phosphate is then, for example, Ca5 (POa)
2, [C'a3(POah]5Ca(OH)2, Ca(
POs)21 Next is Ca2P2O7, preferably Ca3(PO4)2'! 7'r- is [Ca5(
POt)2]5Ca(OH)2.

上述したヨウ素化剤は、たとえばヨウ化リチウム、ヨウ
化ナトリウムもしくはヨウ化カリウムのようなアルカリ
金属ヨウ化物′!たけヨウ化カルシウムもしくはヨウ化
マグネシウムのようなアルカリ土類金属ヨウ化物があげ
られ、好ましくはアルカリ金属ヨウ化物があげられる。
The iodizing agents mentioned above are, for example, alkali metal iodides', such as lithium iodide, sodium iodide or potassium iodide! Examples include alkaline earth metal iodides such as calcium iodide or magnesium iodide, and preferably alkali metal iodides.

本製法においては、溶媒を用いて反応が行われ、その溶
媒は、友とえばペンタン、インペンタン、ヘキサン、ヘ
プタンもしくはオクタンのような脂肪族炭化水素;シク
ロペンタン、シクロヘキサンもしくはメチルシクロヘキ
サンのような脂環式炭化水素;ベンゼン、トルエンもし
くはキシレンのような芳香族炭化水素:塩化メチレン、
クロロホルム、四塩化炭素もしくはトリクロロエチレン
のようなハロゲン化炭化水素:酢酸エテルまたはこれら
の二種以上の混合溶媒があげられ、好ましくはヘキサン
、シクロヘキサン、ベンゼン、クロロホルム、四塩化炭
素または酢酸エチルがあげられる。
In this process, the reaction is carried out using a solvent, which may be an aliphatic hydrocarbon such as pentane, impentane, hexane, heptane or octane; a fatty acid such as cyclopentane, cyclohexane or methylcyclohexane. cyclic hydrocarbons; aromatic hydrocarbons such as benzene, toluene or xylene; methylene chloride;
Halogenated hydrocarbons such as chloroform, carbon tetrachloride, or trichloroethylene; ethyl acetate; or a mixed solvent of two or more thereof; preferred are hexane, cyclohexane, benzene, chloroform, carbon tetrachloride, and ethyl acetate.

本製法を以下に説明する。1−クロロエチルアルキルカ
ーポネー)(1)i1〜211iit、好ましくは1〜
7倍′Ni1li:の溶媒(先に例示し次溶媒)に浴か
す。この溶液に1〜4当意、好ましくは1〜2当址のヨ
ウ素化剤、0.5〜2当量、好ましくは1〜1.5当に
のカルシウムを含むリン酸カルシウムおよび0.5〜2
当量、好ましくは0.9〜1.5当址のプロトン酸を加
える。この混合液上0〜50℃、好ましくは20〜40
’Cで2〜48時間、好ましくは3〜7時間攪拌する。
This manufacturing method will be explained below. 1-chloroethyl alkyl carbonate) (1) i1 to 211iit, preferably 1 to
7 times Ni1li: bathed in a solvent (the following solvent is exemplified above). This solution contains 1 to 4 equivalents, preferably 1 to 2 equivalents of an iodinating agent, 0.5 to 2 equivalents, preferably 1 to 1.5 equivalents of calcium phosphate, and 0.5 to 2 equivalents of calcium phosphate.
Add equivalents, preferably 0.9 to 1.5 equivalents of protic acid. The temperature above this mixed liquid is 0 to 50℃, preferably 20 to 40℃.
Stir at 'C for 2-48 hours, preferably 3-7 hours.

反応液を常法に従って処理すると目的の1−ヨードエチ
ル アルキルヵーボネ−) (2)カmられる。
When the reaction solution is treated according to a conventional method, the desired 1-iodoethyl alkylcarbonate (2) is obtained.

こへに得られる目的物(2)は精製することなくアンピ
シリンなどのエステル化反応に用いることができるが、
必要ならばシリカゲルクロマトグラフィー、蒸留などに
より精製することができる。
The target product (2) obtained here can be used in the esterification reaction of ampicillin etc. without purification.
If necessary, it can be purified by silica gel chromatography, distillation, etc.

3−3効果 本発明により、ルイス酸勿用いなくても、プロトン酸お
よびリン酸カルシウムを用いて好収率で1−ヨードエチ
ル アルキルカーボネート(2)が得られる。従って、
この方法は化合* (2)のすぐれた工業的製法である
3-3 Effects According to the present invention, 1-iodoethyl alkyl carbonate (2) can be obtained in good yield using a protonic acid and calcium phosphate without necessarily using a Lewis acid. Therefore,
This method is an excellent industrial method for producing compound * (2).

以下に実施例をあけて本発明を具体的に示す。The present invention will be specifically illustrated with reference to Examples below.

実施例1 1−ヨードエチル インプロビルヵーボネー上 1−クロロエチル インプロビルカーボネー) (5,
S’)をトルエン(15mZ)に溶かす。この溶液に沃
化ナトリウム(6,74,9; 1.5当量り、第三リ
ン酸カルシウム(1゜55 !9; 1当1t)および
メタンスルホン酸(3,6,9; 1.25当量)t−
加え、30℃で5時間攪拌する。反応液にトルエン(3
5m/)を加え、氷水(35wt)で洗う。トルエン溶
液を5%チオ硫酸す) IJウム水溶液(35−)、5
%炭酸水素ナトリワム水浴fi (35td)、水(3
5d)の順で洗い、乾燥<MJjSOa) L、、トル
エンを留去すると目的物(y、s y ;収率96%)
が油状物として得られる。
Example 1 1-Iodoethyl Improvir carbonate 1-chloroethyl Improvir carbonate) (5,
Dissolve S') in toluene (15mZ). To this solution were added sodium iodide (6,74,9; 1.5 equivalents), tribasic calcium phosphate (1°55!9; 1 ton) and methanesulfonic acid (3,6,9; 1.25 equivalents). −
Add and stir at 30°C for 5 hours. Toluene (3
5m/) and washed with ice water (35wt). (toluene solution 5% thiosulfate) IJium aqueous solution (35-), 5
% sodium bicarbonate water bath fi (35td), water (3
Wash in the order of 5d) and dry <MJjSOa) L, and when toluene is distilled off, the target product (y, s y ; yield 96%)
is obtained as an oil.

NMR(CC1m)δppm 71.20 (6H、(
1、J =6、5 Hz ) 、 2.08(3H、d
 、 J −6,5[(Z ) 。
NMR (CC1m) δppm 71.20 (6H, (
1, J = 6, 5 Hz), 2.08 (3H, d
, J-6,5[(Z).

4.72 (I H、hept 、 J = 8.5 
Hz ) 、 6.58 (I H、q 、 8 Hz
 ) 実施例1と同様の反応を、次の各溶媒を用いて実施例1
と全く同様(試薬および浴媒蓋、反応条件ならび反厄液
の処理条件)に行うと、次の結果が得られる。
4.72 (I H, hept, J = 8.5
Hz), 6.58 (IH,q, 8 Hz
) The same reaction as in Example 1 was carried out using the following solvents.
If the procedure is carried out in exactly the same manner as (reagents and bath medium lid, reaction conditions, and treatment conditions for the anti-toxic liquid), the following results will be obtained.

実施例1〜5で得られるもの一ガスクロマトグラフィー
は目的物のピークのみを示す。
Gas chromatography of the products obtained in Examples 1 to 5 shows only the peak of the target product.

実施例6 1−ヨウドエチル エチルカーボ木−ト1−クロロエチ
ル エチルカーポネー)(1)を用いて、実施例1と同
様に反応、処理(試薬、溶媒1反応時間、反応液の処理
条件)すあ・と目的物(7,01;収率95%)が油状
物として得られる。
Example 6 Using 1-iodoethyl ethylcarbohydrate (1-chloroethyl ethylcarbonate) (1), reaction and treatment were carried out in the same manner as in Example 1 (reagents, solvent 1 reaction time, reaction solution treatment conditions). The desired product (7,01; yield 95%) was obtained as an oil.

NMR(cpcz5)δppm : IJ6 (3H、
t、 J −7Hz ) 、 2.25 (3H、a 
、 J −6Hz ) 、 4.29(2H、q 、 
J = 7 Hz ) 、 6.80 (I H。
NMR (cpcz5) δppm: IJ6 (3H,
t, J -7Hz), 2.25 (3H, a
, J -6Hz), 4.29(2H,q,
J = 7 Hz), 6.80 (IH.

q* J = 6 Hz ) 水晶のガスクロマトグラフィーは目的物のピークのみを
示す。
q* J = 6 Hz) Quartz crystal gas chromatography shows only the peak of the target product.

Claims (1)

【特許請求の範囲】 式 CH_3CHClOCOOR を有する化合物をプロトン酸およびリン酸カルシウムの
存在下、ヨウ素化剤と反応させることを特徴とする、式 CH_3CHIOCOOR を有する1−ヨウ化エチルアルキルカーボネートの製法
。 上記式中、Rは低級アルキル基を示す。
Claims: A process for the preparation of 1-ethylalkyl iodide carbonates having the formula CH_3CHIOCOOR, characterized in that a compound having the formula CH_3CHClOCOOR is reacted with an iodinating agent in the presence of a protic acid and calcium phosphate. In the above formula, R represents a lower alkyl group.
JP61116893A 1986-05-21 1986-05-21 Method for producing 1-ethyl iodide alkyl carbonate Expired - Fee Related JPH0615509B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61116893A JPH0615509B2 (en) 1986-05-21 1986-05-21 Method for producing 1-ethyl iodide alkyl carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61116893A JPH0615509B2 (en) 1986-05-21 1986-05-21 Method for producing 1-ethyl iodide alkyl carbonate

Publications (2)

Publication Number Publication Date
JPS62273937A true JPS62273937A (en) 1987-11-28
JPH0615509B2 JPH0615509B2 (en) 1994-03-02

Family

ID=14698242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61116893A Expired - Fee Related JPH0615509B2 (en) 1986-05-21 1986-05-21 Method for producing 1-ethyl iodide alkyl carbonate

Country Status (1)

Country Link
JP (1) JPH0615509B2 (en)

Also Published As

Publication number Publication date
JPH0615509B2 (en) 1994-03-02

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