Six-Membered Rings containing Oxygen or Sulphur

PART II Six-Membered Rings containing Oxygen or Sulphur by G. P. Ellis 

The synthesis of tocopherol and related compounds has been reviewed. The conformations of coumarins which have anticoagulant action on blood have been studied crystallographically. A valuable review of the occurrence and distribution of the 462 flavonoids that had been found in plants up to the time of its writing was published in 1981. The use of 4-phenyl-l,3-dioxan as an intermediate in the synthesis of fragrant compounds has been surveyed. Chlorinated dibenzodioxins are important compounds, and the first part of a timely review of the thermal formation of these compounds has appeared. All chemists who are active in the benzopyrone field will be saddened to know of the death of Professor K. Venkataraman his life and work is summarized in an appreciation.  

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Six-Membered Rings Systems containing oxygen or sulphur 345... 

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