461, 295 (1928). Recently, A. A. Griswold and P. 5 . Starcher [J. 01.0. Cham., 81,357 (1966)l (25) The removal of a bromine atom from a bromonitro ketone with base has been noted previously: T. M. Lowry, J . Chem. Soe., 78, 986 (1898). Also see H. Feuer, J. W. Shepard, and C. Savides, J . Am. Chem. Soc., 79, 5768 (1957).

No abstract

The synthesis of several novel phosphorus‐containing isocyanates and isothiocyanates is reported. These compounds are spiranes with two six‐membered dioxaphosphorinane rings in their respective molecule. The phosphorus‐bonded isocyanato and isothiocyanato groups are capable of undergoing addition reactions with active hydrogen atom‐containing compounds.

2‐Nitro‐cyclohexanon (I) reagiert mit Methanol in Gegenwart saurer Katalysatoren zu Adipinsäuredimethylester (II), dem Nitro‐ester (III) und dem Ketal (IV); aus 2‐Nitro‐3,5,5‐trimethylpentanon (V) erhält man den Diester (VI) und das Einschiebungsprodukt (VII).