SYNTHETICAL CHEMISTRY 19 



product. Nevertheless, had racemic acid never been resolved, both 

 dextro- and IsBvotartaric acids, according to the above principle, would 

 have been claimed as synthetical products in anticipation of the dis- 

 covery of methods of resolution. To take another actual example, 

 dipentene and dextro- and Isevolimonene [9] are all natural products. 

 Dipentene is racemic limonene, and as this compound has been 

 synthesised it is claimed that the limonenes are also synthetical 

 products, although no method for resolving dipentene has yet been 

 devised. 



c2 



