8.00653
Selenium dioxide
(sublimed) for synthesis
동의어(들):
Selenium dioxide, Selenious anhydride, Selenium(IV) oxide
조직 및 계약 가격을 보려면 로그인를 클릭합니다.
크기 선택
제품정보 (DICE 배송 시 비용 별도)
실험식(Hill 표기법):
O2Se
CAS 번호:
Molecular Weight:
110.96
MDL number:
UNSPSC Code:
12352303
EC Index Number:
231-194-7
NACRES:
NA.22
제품 이름
Selenium dioxide, (sublimed) for synthesis
SMILES string
[Se](=O)=O
InChI
1S/O2Se/c1-3-2
InChI key
JPJALAQPGMAKDF-UHFFFAOYSA-N
vapor pressure
<1 Pa ( 20 °C)
form
crystals
potency
68.1 mg/kg LD50, oral (Rat)
reaction suitability
reagent type: oxidant
pH
2 (20 °C, 10 g/L in H2O)
mp
340 °C
solubility
1353 g/L
density
3.95 g/cm3 at 20 °C
storage temp.
2-30°C
Quality Level
Analysis Note
Assay (iodometric): ≥ 98.0 %
Application
Selenium dioxide (SeO2) is mainly used to oxidize the activated carbon-bearing positions (α-methylene carbon atoms), particularly at allylic or propargylic sites. The more substituted end of the double bond undergoes oxidation.
It can also be used as an oxidizing reagent to synthesize:
It can also be used as an oxidizing reagent to synthesize:
- Amides by oxidative amidation of aldehydes with amines.
- Tropone from cycloheptatriene in the presence of potassium dihydrogen phosphate.
- Acetyltetrahydrobenzofurans by oxidation of conjugated dienones.
- 9-hydroxy-undec-10-ynoate from methyl undec-10-ynoate.
signalword
Danger
Hazard Classifications
Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2
저장 등급
6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
Selenium (IV) Oxide
Hoekstra WJ, et al.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2017)
M S Jie et al.
Lipids, 32(10), 1119-1123 (1997-11-14)
Reaction of methyl undec-10-ynoate (1) with selenium dioxide/tert-butyl hydroperoxide (TBHP) in aqueous dioxane gave methyl 9-oxo-undec-10-ynoate (2, 9%) and 9-hydroxy-undec-10-ynoate (3, 60%), while methyl octadec-9-ynoate (4) yielded mixtures of positional isomers of mono-keto (viz. methyl 8-oxo- and 11-oxo-octadec-9-ynoate, 5, 5%)
Jacek Młochowski et al.
Molecules (Basel, Switzerland), 20(6), 10205-10243 (2015-06-06)
A variety of selenium compounds were proven to be useful reagents and catalysts for organic synthesis over the past several decades. The most interesting aspect, which emerged in recent years, concerns application of hydroperoxide/selenium(IV) oxide and hydroperoxide/organoselenium catalyst systems, as
국제 무역 품목 번호
| SKU | GTIN |
|---|---|
| 8.00653.0005 | 04027269276256 |
| 8.00653.0250 | 04022536361420 |
| 8.00653.1000 | 04022536361437 |
| 8.00653.0050 | 04022536361413 |
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