The pyrolysis of 6a,11b-Dihydro-7-thiabenzo[c]fluorene 7,7-dioxide and some of its derivatives

1968 ◽  
Vol 21 (6) ◽  
pp. 1571 ◽  
Author(s):  
W Davies ◽  
BC Ennis ◽  
QN Porter
Keyword(s):  
Free Radical ◽  
Title Compound ◽  
Compound A ◽  
Radical Rearrangement ◽  
Rearrangement Mechanism ◽  
Derivatives Of

It is shown that heat in the absence of a solvent converts the title compound into benzo[k,l]thioxanthen 7,7-dioxide, 7-thiabenzo[c]fluorene, and o-(1-naphthyl)-benzenesulphonic acid. From these results and a consideration of the related pyrolyses of the 3,10- and 1,8-dimethyl derivatives of the title compound, a free-radical rearrangement mechanism is proposed to explain the observations.

A cyclobutanone-based tandem free radical rearrangement

1994 ◽  
Vol 35 (31) ◽  
pp. 5563-5566 ◽  
Author(s):  
Paul Dowd ◽  
Wei Zhang ◽  
Khalid Mahmood
Keyword(s):  
Free Radical ◽  
Radical Rearrangement

scholarly journals catena-Poly[[[bis(acetonitrile-κN)(4,4′-dimethoxy-2,2′-bipyridine-κ2 N,N′)copper(II)]-μ-trifluoromethanesulfonato-κ2 O:O′] trifluoromethanesulfonate]

IUCrData ◽  
2020 ◽  
Vol 5 (10) ◽  
Author(s):  
Rafael A. Adrian ◽  
Diego R. Hernandez ◽  
Hadi D. Arman
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Metal Organic Frameworks ◽  
Starting Material ◽  
Compound A ◽  
Distorted Octahedral ◽  
Weak Hydrogen Bonds ◽  
Polymeric Chains ◽  
Metal Organic ◽  
Bipyridine Ligand

The central copper(II) atom of the title salt, {[Cu(CF3SO3)(CH3CN)2(C12H12N2O2)](CF3SO3)} n or [[Cu(CH3CN)2(diOMe-bpy)(CF3SO3)](CF3SO3)] n where diOMe-bpy is 4,4′-dimethoxy-2,2′-bipyridine, C12H12N2O2, is sixfold coordinated by the N atoms of the chelating bipyridine ligand, the N atoms of two acetonitrile molecules, and two trifluoromethanesulfonate O atoms in a tetragonally distorted octahedral shape. The formation of polymeric chains [Cu(CH3CN)2(diOMe-bpy)(CF3SO3)]+ n leaves voids for the non-coordinating trifluoromethanesulfonate anions that interact with the complex through weak hydrogen bonds. The presence of weakly coordinating ligands like acetonitrile and trifluoromethanesulfonate makes the title compound a convenient starting material for the synthesis of novel metal–organic frameworks.

scholarly journals rac-(E,trans)-4-Bromo-10,10-dimethyl-9,11-dioxabicyclo[6.3.0]undec-4-ene

IUCrData ◽  
2020 ◽  
Vol 5 (9) ◽  
Author(s):  
Dieter Schollmeyer ◽  
Maximilian Heidrich ◽  
Heiner Detert
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Boat Conformation ◽  
Compound A ◽  
Envelope Conformation ◽  
Twist Boat

In the title compound, a cyclooctene ring in a twist-boat conformation and a dioxolane ring with a distorted envelope conformation are annulated in a trans configuration. Alternating strands of single enantiomers build up the crystal. Within the strands, the molecules are connected by weak C—H...O hydrogen bonds.

scholarly journals (2Sp,4R,8Sp)-4-Methyl-1-phenyl-diferroceno-5-Z-ethylene-1-phosphinoxide

Molbank ◽  
10.3390/m1105 ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. M1105 ◽  
Author(s):  
Philipp Honegger ◽  
Michael Widhalm
Keyword(s):  
Reaction Mechanism ◽  
Asymmetric Catalysis ◽  
Title Compound ◽  
Compound A ◽  
Stereoselective Reaction

We present a synthesis of the title compound, a homochiral diferroceno cycle intended for use in asymmetric catalysis. We present a hydrovinylation protocol, which allows the production of the title compound in two steps from a known diferrocenyl precursor. We obtained one of two possible diastereomers selectively and propose a plausible regio- and stereoselective reaction mechanism.

Free-radical rearrangement of enol sulfonates

1970 ◽  
Vol 92 (10) ◽  
pp. 3203-3205 ◽  
Author(s):  
Norbert. Frydman ◽  
Yehuda. Mazur
Keyword(s):  
Free Radical ◽  
Radical Rearrangement
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