Vinyl ethyl ether appears as a clear colorless low-boiling liquid (35-36°C) with an ether-like odor. Flash point below -50°F. May polymerize exothermically if heated or contaminated. If polymerization takes place inside a container, the container may rupture violently. Less dense than water and slightly soluble in water. Hence floats on water. Vapors are heavier than air.
Hazardous decomposition products formed under fire conditions. - Carbon oxides
粘度:
0.3 mm²/s
燃烧热:
-14.326 Btu/lb = -7959 cal/g = -333 X 10+5 J/kg
汽化热:
26.2 kJ/mol at 35.5 °C
聚合:
Explosive polymerization is catalyzed by methane sulfonic acid.
折光率:
Index of refraction: 1.3767 at 20 °C
保留指数:
499;503.3;495;495
计算性质
辛醇/水分配系数(LogP):
1
重原子数:
5
可旋转键数:
2
环数:
0.0
sp3杂化的碳原子比例:
0.5
拓扑面积:
9.2
氢给体数:
0
氢受体数:
1
ADMET
代谢
体外研究中,乙烯基乙醚暗示乙烯基醚可能经历微粒体氧化生成不稳定的环氧物,但是没有发现致突变活性。
In vitro studies with ethyl vinyl ether suggested that vinyl ethers may undergo microsomal oxidation to unstable epoxides, however, no mutagenic activity was found.
IDENTIFICATION AND USE: Vinyl ethyl ether is a flammable liquid. It is used in proteomics research and organic synthesis. It was studied as an anesthetic agent in the 1950s. HUMAN STUDIES: Vinyl ethyl ether was studied in clinical trials to investigate whether it was suitable as an anesthetic. Some patients participating in these studies suffered complications (generalized convulsions due to hypercarbia and respiratory and circulatory depression as well as respiratory and cardiac arrest), which were attributed to overdosage. The degree of muscle relaxation obtained with this type of anesthesia was considered to be inadequate. Liver function tests conducted after several hours of anesthesia showed that hepatic function was not affected. Urinalyses, blood counts and electrocardiograms obtained after anesthesia revealed slight, reversible changes in some cases. There is a report of one case of transient damage to the human cornea, which was reversible after 48 hr. ANIMAL STUDIES: In rabbits, it caused only very mild irritation to the skin and eye. On acute oral administration, dermal application and inhalation exposure, vinyl ethyl ether was found to be of low toxicity. A rapid induction of CNS depression and rapid recovery from narcosis was noted with monkeys, dogs, rats. The clinical signs of intoxication were characterized by the CNS depressant effect of the substance. In the Salmonella/microsome assay, vinyl ethyl ether was found to test negative both with and without metabolic activation. In the sister chromatid exchange assay in Chinese hamster ovary cells, the chemical caused a significant increase in sister chromatid exchange rate.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
暴露途径
该物质可以通过吸入其蒸汽被身体吸收。
The substance can be absorbed into the body by inhalation of its vapour.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989
NOVEL GLUCOKINASE ACTIVATORS AND METHODS OF USING SAME
申请人:Ryono Denis E.
公开号:US20080009465A1
公开(公告)日:2008-01-10
Compounds are provided which are phosphonate and phosphinate activators and thus are useful in treating diabetes and related diseases and have the structure
wherein
is a heteroaryl ring;
R
4
is —(CH
2
)
n
-Z-(CH
2
)
m
—PO(OR
7
)(OR
8
), —(CH
2
)
n
Z-(CH
2
)
m
—PO(OR
7
)R
g
, —(CH
2
)
n
-Z-(CH
2
)
m
—OPO(OR
7
)R
g
, —(CH
2
)
n
Z—(CH
2
)
m
—OPO(R
9
)(R
10
), or —(CH
2
)
n
Z—(CH
2
)
m
—PO(R
9
)(R
10
);
R
5
and R
6
are independently selected from H, alkyl and halogen;
Y is R
7
(CH
2
)
s
or is absent; and
X, n, Z, m, R
4
, R
5
, R
6
, R
7
, and s are as defined herein; or a pharmaceutically acceptable salt thereof.
A method for treating diabetes and related diseases employing the above compounds is also provided.
提供了磷酸酯和磷酸酯激活剂,因此在治疗糖尿病和相关疾病方面非常有用,并具有以下结构:
其中
是杂环芳基环;
R
4
为—(CH
2
)
n
-Z-(CH
2
)
m
—PO(OR
7
)(OR
8
)、—(CH
2
)
n
Z-(CH
2
)
m
—PO(OR
7
)R
g
、—(CH
2
)
n
-Z-(CH
2
)
m
—OPO(OR
7
)R
g
、—(CH
2
)
n
Z—(CH
2
)
m
—OPO(R
9
)(R
10)
或—(CH
2
)
n
Z—(CH
2
)
m
—PO(R
9
)(R
10)
;
R
5
和R
6
分别选择自H、烷基和卤素;
Y为R
7
(CH
2
)
s
或不存在;以及
X、n、Z、m、R
4
、R
5
、R
6
、R
7
和s如本文所定义;或其药用盐。
还提供了一种利用上述化合物治疗糖尿病和相关疾病的方法。
Rh(II)-catalyzed Denitrogenative Cascade of 1,2,3-Triazolyl Propiolates and Indoles: Access to Butenolide Tethered Homotryptamines
作者:Kuntal Pal、Chandra M. R. Volla
DOI:10.1021/acs.orglett.1c01215
日期:2021.6.4
This methodology provides facile access to butenolide tethered homotryptamines in good to excellent yields under operationally simple conditions and features a broad substrate scope. Overall, the reaction sequence involves the formation of three new bonds (two C–C and one C–O) in a nucleophilic cascade manner. Additionally, an intramolecular rearrangement of these derivatives to thermodynamically more
A General Proline‐Catalyzed Synthesis of 4,5‐Disubstituted
<i>N</i>
‐Sulfonyl‐1,2,3‐Triazoles from 1,3‐Dicarbonyl Compounds and Sulfonyl Azide
作者:Shanmugam Rajasekar、Pazhamalai Anbarasan
DOI:10.1002/asia.201901015
日期:2019.12.13
An efficient proline-catalyzed synthesis of 4,5-disubstituted-N-sulfonyl-1,2,3-triazoles has been accomplished from 1,3-dicarbonylcompounds and sulfonyl azides. The developed reaction is suitable for various symmetrical and unsymmetrical 1,3-dicarbonylcompounds, tolerates various functional groups and affords 4,5-disubstituted-N-sulfonyl-1,2,3-triazoles in good yield with excellent regioselectivity
Method for the Production of N-Substituted (3-Dihalomethyl-1-Methyl-Pyrazole-4-yl) Carboxamides
申请人:Zierke Thomas
公开号:US20100174094A1
公开(公告)日:2010-07-08
The present invention relates to a process for preparing N-substituted (3-dihalomethylpyrazol-4-yl)carboxamides of the formula (I)
in which R
1
is optionally substituted phenyl or C
3
-C
7
-cycloalkyl, R
1a
is hydrogen or fluorine, or R
1a
together with R
1
is optionally substituted C
3
-C
5
-alkanediyl or C
5
-C
7
-cycloalkanediyl, R
2
is C
1
-C
6
-alkyl, C
2
-C
6
-alkenyl, C
2
-C
6
-alkynyl or C
1
-C
4
-alkoxy-C
1
-C
2
-alkyl, X is F or Cl and n is 0, 1, 2 or 3; which comprises
A) providing a compound of the formula (II)
in which X is F or Cl, Y is Cl or Br and R
2
has one of the meanings given above and
B) reacting a compound of the formula (II) with carbon monoxide and a compound of the formula (III)
in which R
1
, R
1a
and n have one of the meanings given above; in the presence of a palladium catalyst;
to intermediates used for the preparation according to the process according to the invention, and also to processes for their preparation.
Synthesis of Piperidine Derivatives by Rhodium- Catalyzed Tandem Reaction of<i>N</i>-Sulfonyl-1,2,3-Triazole and Vinyl Ether
作者:Sisi Yu、Yuehui An、Wenlin Wang、Ze-Feng Xu、Chuan-Ying Li
DOI:10.1002/adsc.201800191
日期:2018.6.5
A chemoselective tandemreaction of 4‐acyloxymethylene‐1‐sulfonyl‐1,2,3‐triazole and vinyl ether was reported, producing polysubstituted piperidinederivatives in up to 96% yield. The key intermediate N‐sulfonyl 1‐azadiene generated by migration of the OAc group to the α‐imino rhodium carbene was isolated and a plausible mechanism was proposed. Several related ring systems were constructed from the