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CAS RN: 2035-89-4 | 產品號碼: F0713
Formaldehyde Dimethylhydrazone
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產品規格
| Appearance | Colorless to Light yellow clear liquid |
| Purity(GC) | min. 98.0 % |
| Purity(Nonaqueous Titration) | min. 98.0 % |
性質
| 熔點 | -103 °C |
| 沸點 | 71 °C |
| flp | -10 °C |
| 比重 | 0.81 |
| 折射率 | 1.43 |
| Maximum Wavelength | 242 nm (Heptane) |
GHS
| 圖形表示 |
|
| 信號詞 | Danger |
| 危險性說明 | H225 : Highly flammable liquid and vapor. |
| 防範說明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P240 : Ground/bond container and receiving equipment. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. P233 : Keep container tightly closed. P243 : Take precautionary measures against static discharge. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use only non-sparking tools. P280 : Wear protective gloves/ eye protection/ face protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P403 + P235 : Store in a well-ventilated place. Keep cool. |
相關法規
| RTECS # | LP9000000 |
運輸資料
| UN編號 | UN1993 |
| 類別 | 3 |
| 包裝類別 | II |
| HS編碼* | 2928.00-000 |
Application
A Useful Hydrazone Derivative Usable for a Neutral Formyl Anion Equivalent
Introduction of a hydrazine-moiety1): To a cooled (0 °C) solution of 3-methyl-2-cyclopentenone (2 mmol) in dry ether (10 mL) is added dropwise TDS triflate (2.5 mmol) followed by a solution of Formaldehyde dimethylhydrazone (0.34 mL, 4 mmol) in dry ether (4 mL) over 10 min under an argon atmosphere. The mixture is stirred for 15 min, quenched with TBAF (1 M in THF, 2.5 mL) and the mixture is diluted with Et2O (20 mL) and washed with brine. The combined organic layer is concentrated, and the residue is purified by column chromatography (1:1 Et2O-petroleum ether) to give the product 3 (306 mg, 91%) as an oil.
References
- 1)Formaldehyde Dialkylhydrazones as Neutral Formyl Anion and Cyanide Equivalents: Nucleophilic Addition to Conjugated Enones
- 2)Formaldehyde dimethylhydrazone: A new neutral reagent for nucleophilic hydroformylation and hydrocyanation
PubMed Literature
文檔
產品介紹報導
[Product Highlights] A Useful Hydrazone Derivative Usable for a Neutral Formyl Anion Equivalent產品文件 （部分產品的分析圖譜無法提供，敬請諒解。）