Tervalent Phosphorus Acids

For the first time since the inception of this Report the total number of references appearing in this area has shown a significant decrease. Phosphinic acids and their derivatives have been reviewed.  

Although this chapter is somewhat shorter than last year s, it is encouraging to note that several papers have appeared which deal with the synthesis and chemistry of / -bonded phosphorus compounds. 

The Reporter notes an overall decrease in the number of papers in this area published during the year, although the number dealing with p -bonded phosphorus compounds continues to increase. The reactions of disulphides with tervalent phosphorus compounds have been reviewed.  

The organization of this Chapter has been changed somewhat from last year. Phosphonous and phosphinous acids and their derivatives, and cyclic esters of phosphorous acid, are not discussed separately from phosphorous acid and its derivatives, because of the similarity of the reactions involved. Two-co-ordinate phosphorus compounds are treated in a separate section like last year phospha-alkenes without phosphorus-heteroatom bonds are not covered. 

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