Pyrophosphoric acid diesters esters

The main purpose of this section is to introduce derivatives of phosphoric acid. The acid chloride derivative is C1P0(0H)2, chlorophosphoric acid, and the amide derivative is phosphoramic acid, HgN-POCOHlg. These acid derivatives will not be discussed because they will not be used in this book. There are three ester derivatives of phosphoric acid a monoester 203, a diester 204, and a triester 205. There are also derivatives of pyrophosphoric acid (diphosphoric acid, 206), which include various esters. 

Esters of phosphoric acid, pyrophosphoric acid, and triphosphoric acid are important biological molecules. Each OH group of the acid can be esterified monoesters and diesters are the most common biological molecules. ATP is a monoester of triphosphoric acid. We have seen that the components of cell membranes are monoesters or diesters of phosphoric acid (Section 16.13), and that many of the coenzymes are monoesters or diesters of either phosphoric acid or pyrophosphoric acid (Chapter 24). In Section 26.1, we will see that DNA and RNA are diesters of phosphoric acid. 

Phosphoric acid diesters from phosphorodichloridates—Simultaneous removal of protective groups s. 13, 284 Pyrophosphoric acid esters... 

Phosphoric acid diesters s. 17, 171 also unsym. pyrophosphoric acid esters s. Soc. 196A, 326... 

Corby, N S, Kenner, G W, and Todd, A R (1952) The preparation of tetra-esters and pyrophosphoric acid from diesters of phosphoric acid by means of exchange reactions. J. Chem. Soc. (Lond.) 1234-1243... 

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