2041-19-2

Product Name3-Bromo-9h-fluoren-9-one
Purity99%

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Product Details

Quick Details

CasNo： 2041-19-2
Purity： 99%

2041-19-2 Properties

Molecular Formula:C13H7BrO
Molecular Weight:259.102
Melting Point:188-190℃
Boiling Point:391.3±21.0 °C(Predicted)
PSA：17.07000
Density:1.609±0.06 g/cm3(Predicted)
LogP:3.66050

2041-19-2 Relevant articles

Intramolecular Addition of Aryl Radicals to Carbon-Nitrogen Double Bonds

Gioanola, Milena,Leardini, Rino,Nanni, Daniele,Pareschi, Patrizia,Zanardi, Giuseppe

, p. 2039 - 2054 (2007/10/02)

Cyclisation of radicals 6a,b is highly regioselective towards a 5-exo process; 6-endo ring closure is a minor route and their ratio depends on the substituents.No ring expansion of the five-membered radical intermediates 7a,b was observed.Radicals 27a,b give rise to 5-exo cyclisation regiospecifically.A competitive 1,5-hydrogen shift leading to imidoyl radicals was noticed.An analogous behaviour is also exhibited by vinyl radicals when allowed to add to carbon-nitrogen double bonds.

Kinetics and Mechanism of Oxidation of Fluoren-9-ol and Substituted Fluoren-9-ols by Bromamine-T

Gunasekaran, S.,Venkatasubramanian, N.

, p. 774 - 777 (2007/10/02)

The title reactions have been investigated in aq. acetic acid medium both in the presence and absence of perchloric acid.The reactions are first order each in and under both the conditions.There is unit dependence in perchloric acid.The effects of change in polarity of the solvent medium, added toluene-p-sulphonamide and sodium perchlorate have been studied.The reaction exhibits kinetic isotope effect (kH/kD = 2.2).Hammett ρ is found to be -2.8.Activation parameters have been evaluated.A mechanism consistent with rate data has been proposed.

2041-19-2 Process route

: 2038-90-6
3-bromofluoren-9-ol

: 41085-71-6
bromamine T

: 2041-19-2
3-bromofluoren-9-one

: 70-55-3
toluene-4-sulfonamide

Conditions

Conditions	Yield
With acetic acid; for 24h;
With acetic acid; at 30 ℃; Kinetics; Mechanism; Thermodynamic data; E(activ.), ΔH(activ.), ΔS(activ.), Γ(activ.);

: N-<(5'-bromo-2'-iodobiphenyl-2yl)methylene>-4-chlorobenzenamine

: 2041-19-2
3-bromofluoren-9-one

: N-(3-bromo-9H-fluoren-9-yl)-4-chlorobenzenamine

Conditions

Conditions	Yield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; Yield given. Multistep reaction; 1.) benzene, reflux, 7 h; 2.) column chromatography;	50%
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; In benzene; for 7h; Heating;	5% 50%