The Beckmann Rearrangement ofp-Nitrobenzophenone Oxime with Thionyl Chloride

Synthesis of Pyrrole-modified Porphyrins: Oxachlorins, and the Beckmann Rearrangement of Octaethyl-2-oxa-chlorin Oxime

Cyclopropenium ion catalysed Beckmann rearrangement.

1-Chloro-2,3-diphenylcyclopropenium ion was found to be a very efficient organocatalyst (3 mol% loading) for liquid phase Beckmann rearrangement of various ketoximes to the corresponding amides/lactams within 2 h in acetonitrile at reflux temperature. This is the first example of the application of the cyclopropenium ion as a catalyst, which opens up a new aspect of the synthetic utility of aro...

Beckmann Rearrangements of 1-Indanone Oxime Derivatives Using Aluminum Chloride and Mechanistic Considerations

Hydrocarbostyril, which is a key intermediate in our new synthetic route to 6-nitroquipazine, can be prepared from 1-indanone oxime by Beckmann rearrangement. We have optimized the reaction by using a Lewis acid, aluminum chloride, in the yield of 91% instead of common acids such as polyphosphoric acid, and sulfuric acid used in conventional Beckmann rearrangement (20% in the literature, 10% in...

Conductivity of Thionyl Chloride-Lithium Tetrachloroaluminate Solutions

The specific conductivity of solutions of LiA1C14 dissolved in SOC12 was determined as a function of composition and temperature. An analytical expression from which the conductivity can be calculated is given as a function of the mole fraction of LiA1C14 and temperature in the ranges from 0 ~ to 0.37~ and from -20 ~ to +70~ respectively. LiAIC14-SOC14 mixtures are used commercially as electrol...

C1 Nuclear Quadrupole Interaction in Thionyl Chloride

21 hyperfine multiplets, up to J = 12, have been measured for thionyl chloride (S0C12), by means of microwave spectroscopy in the region 18.0 —26.5 GHz. Nuclear quadrupole coupling constants along the principal axes of inertia were determined to be Xaa ~ ~ 25.004 ± 0.040 MHz, Xbb = 0.009 ± 0.025 MHz and Xce = 25.013 ± 0.031 MHz. Also, coupling constants along the S—CI bond axis (z axis) and two...