Detail of "17346-16-6"

CAS Number:
17346-16-6
Name:
3-Pentanone,2,4-dibromo-2,4-dimethyl-
Molecular Structure:
Formula:
C₇H₁₂Br₂O
Molecular Weight:
271.98
Synonyms:
2,4-Dibromo-2,4-dimethyl-3-pentanone;2,4-Dibromo-2,4-dimethyl-3-pentenone;NSC 120442;2,4-Dibromo-2,4-dimethylpentan-3-one;
Density:
1.622 g/cm³
Boiling Point:
206.1 °C at 760 mmHg
Flash Point:
72.8 °C
Appearance:
clear colorless to amber liquid
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-27-36/37/39 Details

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Carbon-carbon bond formations promoted by transition metal carbonyls: Carbon-carbon bond formations promoted by transition metal carbonyls. XIV. Stereochemistry of the electrophilic olefinic substitution of 2-oxyallyl-iron(II) species. Inspection of the conformation of the zwitterionic intermediates. Hayakawa, Y.; Yokoyama, K.; Noyori, R. (Dep. Chem., Nagoya Univ., Nagoya, Japan). Tetrahedron Lett., (48), 4347-50 (English) 1976. CODEN: TELEAY. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) (Me2CCOFeLnCMe2)+ (L = Br, CO) with Z-PhCH:CHD underwent stereospecific cycloaddn. to give the cyclopentanone I and nonstereospecific substitution to give E-Me2CHCOMe2CD:CHPh (II) and E-Me2CDCOCMe2CH:CHPh (III) as a mixt. The nonstereospecific formation of II and III is explained in terms of the Z shaped intermediate PhC+HCHDCMe2C(O-):CMe2 in which there is rotation about the PhCH-CHD bond. Sixty degree rotation followed by proton transfer gives II in which the styrene stereochem. is retained whereas 120.degree.In this experiment, several chemicals are used like 17346-16-6 and 100-42-5 rotation followed by D elimination gives III in which the styrene stereochem. is inverted. .

2,2,4,4-Tetramethyl-3-methylenebicyclo[3: 2,2,4,4-Tetramethyl-3-methylenebicyclo[3.2.1]oct-6-ene. Hoffmann, H. M. R.; Weber, Anette; Giguere, Raymond J. (Inst. Org. Chem., Univ. Hannover, Hannover D-3000, Fed. Rep. Ger.). Chem.Several substances like 17346-16-6 may be metioned in this study. Ber., 117(11), 3325-9 (English) 1984. CODEN: CHBEAM. ISSN: 0009-2940. DOCUMENT TYPE: Journal CA Section: 24 (Alicyclic Compounds) The title compd. I was prepd. in 38% yield by cyclization of cyclopentadiene with Me2C:C(CH2SiMe3)CMe2OH (II) in H2CCl2 contg. TiCl4/PhNHMe. II was prepd. in 4 steps from MeCOCH2CO2Et. .