| Abstract: | Cyclic Phosphides of Carbonic Acids 2-Organo-2-benzophospholen-1,3-dione have been prepared by the reaction of o? C6H4(COCl)2 with Li2PC2H5 or C6H5PH2. Using disubstituted carbonic acid-chlorides the same reaction leads to indefinable products. 4-Butenoyl- and 5-Pentenoyl-phenyl- and -cyclohexylphosphines are produced from 3-butenoic and 4-pentenoic acid-chlorides and C6H5PH2 or C6H11PH2. These products are transferred to heterocyclic systems after addition of the P? H-group to the C? C-doublebond. By LiAlH4 the phospholan-2-ones and phosphorinan-2-ones are reduced to the corresponding alcohols. The saponification of the parent compounds gives phosphino carbonic acids. The prepared P-heterocycles behave like ordinary tert. phosphines. |
