Detail of "821-06-7"

CAS Number:
821-06-7
Name:
2-Butene, 1,4-dibromo-,(2E)-
Superlist Name:
(E)-1,4-Dibromobut-2-ene
Molecular Structure:
Formula:
C₄H₆Br₂
Molecular Weight:
213.92
Synonyms:
2-Butene,1,4-dibromo-, (E)- (8CI);2-Butene, 1,4-dibromo-, trans- (4CI);(2E)-1,4-Dibromo-2-butene;(E)-1,4-Dibromo-2-butene;1,4-Dibromo-(E)-2-butene;1,4-Dibromo-2-(E)-butene;1,4-Dibromo-trans-2-butene;trans-1,4-Dibromo-2-butene;(2E)-1,4-dibromobut-2-ene;
EINECS:
212-472-7
Density:
1.867 g/cm³
Melting Point:
48-51 °C(lit.)
Boiling Point:
203 °C at 760 mmHg
Flash Point:
71.9 °C
Solubility:
slightly soluble in water
Appearance:
white to light yellow crystal powder
Hazard Symbols:
Risk Codes:
34-23/25
Safety:
26-36/37/39-45-28A Details
Transport Information:
UN 2923 8/PG 2

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CAS No.821-06-7 (E)-1,4-Dibromobut-2-ene

Supplier:Jiangsu Dacheng Pharmaceutical and Chemical Co.,Ltd[ China (Mainland)]

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Reference

3-Cyclopropanecarbonyl-2-pyrones, and method and agents for control of arthropods using them: 3-Cyclopropanecarbonyl-2-pyrones, and method and agents for control of arthropods using them. Mori, Tatsuya; Matsumoto, Osamu; Matsuo, Noritada (Sumitomo Chemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 2005015468 A2 20 Jan 2005, 16 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C07D309-36. ICS: A01N043-16; C07M007-00. APPLICATION: JP 2004-147365 18 May 2004. PRIORITY: JP 2003-159001 4 Jun 2003. DOCUMENT TYPE: Patent CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 27 The compds. 821-06-7 and 540-88-5 which are cas registry numbers of chemicals are mentioned. I (R = C1-3 alkyl, C2-3 alkenyl, halo, cyano, C1-3 haloalkyl) are useful for control of arthropods. Thus, I (R = Me) (prepn. given) showed 100% control against Blattella germanica. Emulsions, granules, aerosols, etc., contg. I were also formulated. .

Stereocontrolled synthesis of 2,5-linked bistetrahydrofurans via the triepoxide cascade reaction: Stereocontrolled synthesis of 2,5-linked bistetrahydrofurans via the triepoxide cascade reaction. Hoye, Thomas R.; Suhadolnik, Joseph C. (Dep. Chem., Univ. Minnesota, Minneapolis, MN 55455, USA). Tetrahedron, 42(11), 2855-62 (English) 1986. CODEN: TETRAB. ISSN: 0040-4020. DOCUMENT TYPE: Journal CA Section: 26 (Biomolecules and Their Synthetic Analogs) Section cross-reference(s): 27 A complementary set of stereochem. controlled approaches to the prepn. of 12 diastereomers of the bistetrahydrofurans I is described. The key transformation involves a series of nucleophilic displacement reactions within triepoxides II (the end-to-end triepoxide cascade reaction), which leads, after acetylation, to bistetrahydrofuran tetraacetates. 821-06-7 is also in the experiment. The inside-out cyclization of the diepoxide III exemplifies a useful variation with significant stereochem. consequences. The role of symmetry in these approaches is discussed. A general math. anal. for conceptualizing isomer distribution within multistep sequences is presented. .

Detail of "821-06-7"

2-Butene, 1,4-dibromo-,(2E)-

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Reference