Detail of "78-76-2"

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CAS Number:
78-76-2
Name:
Butane,2-bromo-
Superlist Name:
2-Bromobutane
Molecular Structure:
Formula:
C₄H₉Br
Molecular Weight:
137.02
Deleted CAS:
5787-31-5
Synonyms:
2-Butyl bromide;Methylethylbromomethane;NSC 8417;sec-Butyl bromide;
EINECS:
201-140-7
Density:
1.267 g/cm³
Melting Point:
-112 ºC
Boiling Point:
90.7 ºC at 760 mmHg
Flash Point:
21.1 ºC
Solubility:
insoluble in water
Appearance:
colourless liquid with a pleasant odour
Hazard Symbols:
F,Xi
Risk Codes:
11-36/37/38-10
Safety:
16-23-24/25-37/39-26 Details
Transport Information:
UN 2339 3/PG 2

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Reference

Asymmetric selection by optically active polymers in a phase-transfer system: Asymmetric selection by optically active polymers in a phase-transfer system. Kawakami, Yuhsuke; Yamashita, Yuya (Fac. Eng., Nagoya Univ., Nagoya 464, Japan). Polym. Sci. Technol. (Plenum), 24(Crown Ethers Phase Transfer Catal. Polym. Sci.), 263-74 (English) 1984. CODEN: POSTB5. ISSN: 0093-6286. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 22, 27, 28 The chlorination of (S)-2,2-dimethyl-1,3-dioxolane-4-methanol (I) [22323-82-6] by Ph3P [603-35-0]-CCl4 [56-23-5] in the presence of bases gave 24-67% 4-(chloromethyl)-2,2-dimethyl-1,3-dioxolane. Stereoselectivity, as shown by studies with the CD2OH deriv. of I, was highest in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene [6674-22-2]. Other optically active 4-(halomethyl)-2,2-dimethyl-1,3-dioxolanes and epihalohydrins were prepd. 23735-39-9 and 603-35-0 are cas registry numbers of chemicals which are used as reagents here., e.g., (-)-epifluorohydrin [83398-56-5] with optical purity 97%. In the esterification of carboxylate salts by alkyl halides, e.g., of AcOK [127-08-2] by sec-BuBr [78-76-2], in the presence of poly(N-methyl-L-isopropylethylene) [88585-85-7] or poly(L-isopropylethylenimine) [39923-70-1], enantiomer selection was 1.5-4.2%. Esters prepd. in the presence of optically inactive amines or polyamines showed no activity. .

Simulated data for electrochemical determination of rate constants for homogeneous electron transfer reactions with a second order homogeneous follow-up reaction: Simulated data for electrochemical determination of rate constants for homogeneous electron transfer reactions with a second order homogeneous follow-up reaction. I. Coupling between mediator and reduced form of the substrate. Pedersen, Steen U.; Svensmark, Bo (Dep. Org. Chem., Univ.Some commonly used reagents like 507-19-7 and 78-76-2 are used in this experiment. Aarhus, Aarhus DK-8000, Den.). Acta Chem. Scand., Ser. A, A40(9), 607-14 (English) 1986. CODEN: ACAPCT. ISSN: 0302-4377. DOCUMENT TYPE: Journal CA Section: 72 (Electrochemistry) Section cross-reference(s): 22 The kinetic equation for catalytic soln. electron transfer followed by a 2nd order coupling reaction: A + e- t B; B + C ? A + D, k1; B + D ? products, fast, were solved by digital simulation for cyclic voltammetry, linear sweep voltammetry, and double potential step chronoamperometry. Simulated data for simple and fast measurements of the homogeneous electron transfer rate const. by 4 std. methods are presented. The methods allow measurements of k1 for a broad range of fast and slow systems and were tested on the anthracene0tert-Bu bromide system and the anthracene/sec-Bu bromide system. .

Detail of "78-76-2"

Butane,2-bromo-

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Reference