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The anodic conversion of 2,4,6-tri-tert-butylphenol in methanol, leading to 2,4,6-tris( l,l-dimethylethyl)-4-methoxy-2,5-cyclohexadien-l-one, has been followed by two types of 13C NMR experiments: (a) a static procedure, inserting the electrodes directly into a rotating NMR tube and (b) a continuous flow procedure, combining electrochemical and NMR flow cells. During electrolysis the resolution of the 13C NMR spectra decreased in the static procedure owing to magnetic field gradients. In the flow procedure the resolution was comparable with that of routine spectra.

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SummaryI5N-CIDNP. spectra recorded during the reaction of diazonium cations with OH-in weakly alkaline aqueous solutions show that the dediazoniation is at least partially homolytic. The polarizations observed for the diazonium and transdiazotate ions can be explained by reaction proceeding via a cage involving diazenyl and diazotate radicals using Kuptein's rules and simple intensity considerations.

The article contains sections titled: 1. Chloroethanes 1.1. Monochloroethane 1.1.1. Physical Properties 1.1.2. Chemical Properties 1.1.3. Production 1.1.4. Uses and Economic Aspects 1.2. 1,1‐Dichloroethane 1.2.1. Physical Properties 1.2.2. Chemical Properties 1.2.3. Production 1.2.4. Uses and Economic Aspects 1.3. 1,2‐Dichloroethane 1.3.1. Physical Properties 1.3.2. Chemical Properties 1.3.3. Production 1.3.4. Uses and Economic Aspects 1.4. 1,1,1‐Trichloroethane 1.4.1. Physical Properties 1.4.2. Chemical Properties 1.4.3. Production 1.4.4. Uses and Economic Aspects 1.5. 1,1,2‐Trichloroethane 1.5.1. Physical Properties 1.5.2. Chemical Properties 1.5.3. Production 1.5.4. Uses and Economic Aspects 1.6. 1,1,1,2‐Tetrachloroethane 1.6.1. Physical Properties 1.6.2. Chemical Properties 1.6.3. Production 1.7. 1,1,2,2‐Tetrachloroethane 1.7.1. Physical Properties 1.7.2. Chemical Properties 1.7.3. Production 1.7.4. Uses and Economic Aspects 1.8. Pentachloroethane 1.8.1. Physical Properties 1.8.2. Chemical Properties 1.8.3. Production 1.8.4. Uses and Economic Aspects 1.9. Hexachloroethane 1.9.1. Physical Properties 1.9.2. Chemical Properties 1.9.3. Production 1.9.4. Uses and Economic Aspects 2. Chloroethylenes 2.1. Vinyl Chloride (VCM) 2.1.1. Physical Properties 2.1.2. Chemical Properties 2.1.3. Production 2.1.3.1. Vinyl Chloride from Acetylene 2.1.3.2. Vinyl Chloride from 1,2‐Dichloroethane 2.1.3.3. Vinyl Chloride from Ethylene by Direct Routes 2.1.3.4. Vinyl Chloride from Ethane 2.1.3.5. Vinyl Chloride by Other Routes 2.1.4. Uses and Economic Aspects 2.2. 1,1‐Dichloroethylene (Vinylidene Chloride, VDC) 2.2.1. Physical Properties 2.2.2. Chemical Properties 2.2.3. Production 2.2.4. Uses and Economic Aspects 2.3. 1,2‐Dichloroethylene 2.3.1. Physical Properties 2.3.2. Chemical Properties 2.3.3. Production 2.3.4. Uses and Economic Aspects 2.4. Trichloroethylene 2.4.1. Physical Properties 2.4.2. Chemical Properties 2.4.3. Production 2.4.4. Uses and Economic Aspects 2.5. Tetrachloroethylene 2.5.1. Physical Properties 2.5.2. Chemical Properties 2.5.3. Production 2.5.4. Uses and Economic Aspects 3. Analysis and Quality Control of Chloroethanes and Chloroethylenes 4. Storage and Transportation of Chloroethanes and Chloroethylenes 5. Environmental Aspects in the Production of Chloroethanes and Chloroethylenes 6. Toxicology