1,2-ジメトキシベンゼン 化学特性,用途語,生産方法
外観
白色/無色～ほとんど白色/ほとんど無色粉末～塊～透明液体
溶解性
エタノール、エーテルに易溶。水に微溶。エタノール及びジエチルエーテルに溶け、水に溶けにくい。水に難溶。エタノール、エーテルに易溶。
用途
医薬品またはメッキ薬などの原料
用途
医薬、メッキ薬等の合成原料。
化学的特性
Colorless crystals or liquid. Soluble in alcohol
and ether; slightly soluble in water.
天然物の起源
Reported present in asparagus (raw and cooked), bonito (dried), broccoli (cooked), cauliflower (cooked),
cognac, endive, grape, Gruyere de Comte cheese, guava, leek (raw and heated), olive, peas, rhubarb, rice bran and vanilla extract.
使用
1,2-Dimethoxybenzene was used to investigate the electroantennogram response of vine weevil,
Otiorhynchus sulcatus to plant volatiles.
製造方法
Prepared by methylation of pyrocatechol.
1,2-Dimethoxybenzene can also be prepared from Catechol. The specific synthesis steps are as follows:
Aqueous sodium hydroxide(40%,175 ml)is added dropwise during 3 hr at 18-22 to a well stirred mixture of catechol (50 g,0.45 mole),sodium hydrosulphite (20 g,0.115 mole),dimethyl sulphate (110 ml,146.63 g, 1.16 mole)and alcohol (150 ml).Ice (1 kg)is added to the reaction mixture and left overnight at room temperature.It is extracted with ether (2x 200 ml).The ether extract is washed with water,dried (anhydrous sodium sulphtate)and distilled.Veratrole is obtained as oil.Yield 52.75 g (84.1%).B.p.207°(1it.3b.p.207).
定義
ChEBI: A dimethoxybenzene with the methoxy groups at ortho-positions.
一般的な説明
1,2-Dimethoxybenzene reacts with Li{N(SO
2CF
3)
2} to yield molecular crystal [Li{N(SO
2CF
3)
2}{C
6H
4(OCH
3)
2}
2] having solid-state lithium ion conductivity. It is a potential pollinator attractant of the nocturnal moth
Hadena bicruris.
毒性学
Data from 1,2-dimethoxybenzene and read-across analog 1,4-dimethoxybenzene (CAS # 150-78-7) show that 1,2-dimethoxybenzene is not expected to be genotoxic. Data show that there are no safety concerns for 1,2-dimethoxybenzene for skin sensitization under the current declared levels of use. The repeated dose, reproductive, and local respiratory toxicity endpoints were evaluated using the TTC for a Cramer Class I material, and the exposure to 1,2-dimethoxybenzene is below the TTC (0.03 mg/kg/day, 0.03 mg/kg/day, and 1.4 mg/day, respectively). The phototoxicity/photoallergenicity endpoints were evaluated based on UV spectra; 1,2-dimethoxybenzene is not expected to be phototoxic/photoallergenic. For the environmental endpoints, 1,2-dimethoxybenzene is not a PBT as per the IFRA Environmental Standards, and its risk quotients (i.e., PEC/PNEC) for the aquatic environment, based on its current volume of use in Europe and North America, are < 1
純化方法
Steam distil veratrole, then fractionally distil it from BaO, CaH2 or Na. Crystallise it from *benzene or low-boiling pet ether at 0o. Fractionally crystallise it from its melt. Store it over anhydrous Na2SO4. [Beilstein 6 IV 5564.]
1,2-ジメトキシベンゼン 上流と下流の製品情報
原材料
準備製品
3,4-ジメトキシ-α-イソプロピル-α-(3-クロロプロピル)ベンゼンアセトニトリル
3-クロロ-3',4'-ジメトキシベンゾフェノン
3,4-ジメトキシベンジル シアニド
6,7-DIMETHOXY-3-METHYL-1,2,3,4-TETRAHYDROISOQUINOLINE HYDROCHLORIDE
2,3-ジメトキシフェニルボロン酸
3,4-ジメトキシ-α-(1-メチルエチル)ベンゼンアセトニトリル
2,3,6,7,10,11-ヘキサヒドロキシトリフェニレン
4,5-ジメトキシ-1-ベンゾシクロブテンカルボニトリル 1-シアノ-4,5-ジメトキシベンゾシクロブテン
3,4-ジメトキシフェノール
3,4-ジメトキシベンゼン酢酸エチル
3,4-ジメトキシアニリン
(1R)-1-[(3,4-ジメトキシフェニル)メチル]-6,7-ジメトキシ-2-メチル-1,2,3,4-テトラヒドロイソキノリン
メトキシベンゾキノン
6,7-ジメトキシイソキノリン
3-イソプロピルベンゼン-1,2-ジオール