炭酸 ジベンジル
| メーカー |
製品番号 |
製品説明 |
CAS番号 |
包装 |
価格 |
更新時間 |
購入 |
|
富士フイルム和光純薬株式会社(wako)
|
W01AFAA11464 |
炭酸ジベンジル
Dibenzyl Carbonate |
3459-92-5 |
10g |
￥26480 |
2024-03-01 |
購入 |
|
富士フイルム和光純薬株式会社(wako)
|
W01AFAA11464 |
炭酸ジベンジル
Dibenzyl Carbonate |
3459-92-5 |
50g |
￥104360 |
2024-03-01 |
購入 |
|
富士フイルム和光純薬株式会社(wako)
|
W01AFAA11464 |
炭酸ジベンジル
Dibenzyl Carbonate |
3459-92-5 |
250g |
￥358950 |
2024-03-01 |
購入 |
|
東京化成工業
|
C1600 |
炭酸ジベンジル >98.0%(GC)
Dibenzyl Carbonate
>98.0%(GC) |
3459-92-5 |
1g |
￥3800 |
2024-03-01 |
購入 |
|
東京化成工業
|
C1600 |
炭酸ジベンジル >98.0%(GC)
Dibenzyl Carbonate
>98.0%(GC) |
3459-92-5 |
5g |
￥14700 |
2024-03-01 |
購入 |
炭酸 ジベンジル 化学特性,用途語,生産方法
外観
白色～ほとんど白色粉末～塊
化学的特性
Colorless low melting solid
使用
Ionic liquids can effectively accelerate slow N-benzylation reactions utilizing dibenzyl carbonate as an alkylating reagent. Dibenzyl carbonate (DBzlC) has been used to benzylate phenylacetonitrile, benzyl phenylacetate and phenol. Selective N, N-dibenzylation of primary aliphatic amines was carried with dibenzyl carbonate in the presence of phosphonium salts.
製造方法
To a stirred solution of benzyl alcohol (0.216 g, 2.00 mol), tributylphosphine (0.303 g, 1.50 mmol), and CyTMG (0.394 g, 2.00 mmol) in DMF (2.00 mL), CO2 was added at room temperature. After 15 min, tetrabromomethane (0.663 g, 2.00 mmol) was added, the reaction vessel was sealed, and the contents were stirred for 2 h. Thereafter, the reaction mixture was diluted with ethyl acetate, washed successively with 0.5 m aqueous HCl and saturated aq. NaHCO3 solution, and dried over Na2SO4. Diphenylmetha- nol was added to the organic solution as an internal standard and the yield of dibenzyl carbonate was determined from the relative integrals of a methylene peak of the carbonate and a methine peak of diphenylmethanol in the 1H NMR spectrum of the ethyl acetate solution. Dibenzyl carbonate, prepared by a larger scale reaction of CO2 with benzyl alcohol (1.08 g, 10.0 mmol), was isolated by column chromatography (cyclohexane/ethyl acetate, 50:1) in 67.3% yield (0.816 g).
一般的な説明
Dibenzyl carbonate (DBC) is commonly used as a benzylating agent. Dimethyl carbonate and excess of benzyl alcohol undergoes transesterification in the presence of CsF/α-Al
2O
3 (cesium fluoride/aluminum oxide) to form DBC. The formation of
N,
N-dibenzyl derivatives by the reaction of primary aliphatic amines with DBC in the presence of phosphonium salts has been investigated.
炭酸 ジベンジル 上流と下流の製品情報
原材料
準備製品
炭酸 ジベンジル 生産企業
Global( 138)Suppliers
3459-92-5(炭酸 ジベンジル)キーワード:
- 3459-92-5
- Carbonic acid, bis(phenylmethyl) ester
- CARBONIC ACID DIBENZYL ESTER
- DIBENZYL CARBONATE
- Dibenzylcarbonate,98%
- dibenzyl carbazate
- NSC 406789
- Dibenzyl carbonate 99%
- Linezolid Impurity 50
- Dibenzyl Carbonate >
- Benzyl carbonate
- 炭酸 ジベンジル
- 炭酸ビス(フェニルメチル)
- 炭酸ジベンジル
- ジベンジル カルボナート
- 有機合成化学
- 保護 & 誘導体化試薬 (合成用)