Snamprogetti S.p.a.

Eniricerche S.p.a.

Antonio Rossodivita

Piergiorgio Zappelli

Rosario Pappa

Luciano Re

Giulio Alberti

Umberto Costantino

Riccardo Vivani

Luciano Bassignani

A tetravalent metal diphosphonate-phosphite composition definable by the following general formula:

Tetravalent metal diphosphonate-phosphite composition in microporous

The present invention discloses a compound comprising a diphosphonate/phosphite of a tetravalent metal:

Mesoporous crystalline solid compound of a diphosphonate/phosphite of a

A method is disclosed for preparing functionalized adenine derivatives, said method comprising the step of reacting a compound which contains an adenine nucleus which has been halogen substituted in the 8-position, with a compound having the general formula M.sup.+- S--(CH.sub.2).sub.n --COO.sup.- M.sup.+ wherein M.sup.+ is the ion of an alkali metal and n is an integer, the reaction being carried out in a polar aprotic solvent. Procedures for preparing macromolecularized adenine compounds are also indicated by reacting a functionalized adenine derivative with a polymer which has at least one primary or secondary aminic group in its structure. This is a division of application Ser. No. 705,012 filed July 14, 1976, U.S. Pat. No. 4,091,203.

Method for the preparation of macromolecularized adenine derivatives

A method is disclosed for preparing functionalized adenine derivatives, said method comprising the step of reacting a compound which contains an adenine nucleus which has been halogen substituted in the 8-position, with a compound having the general formula N.sup.+- S--(CH.sub.2).sub.n --CO0.sup.- M.sup.+ wherein M.sup.+ is the ion of an alkali metal and n is an integer, the reaction being carried out in a polar aprotic solvent. Procedures for preparing macromolecularized adenine compounds are also indicated by reacting a functionalized adenine derivative with a polymer which has at least one primary or secondary aminic group in its structure.

Macromolecularized adenine derivatives

A method is disclosed for preparing functionalized adenine derivatives, said method comprising the step of reacting a compound which contains an adenine nucleus which has been halogen substituted in the 8-position, with a compound having the general formula M.sup.+- S--(CH.sub.2).sub.n --COO.sup.- M.sup.+ wherein M.sup.+ is the ion of an alkali metal and n is an integer, the reaction being carried out in a polar aprotic solvent. Procedures for preparing macromolecularized adenine compounds are also indicated by reacting a functionalized adenine derivative with a polymer which has at least one primary or secondary aminic group in its structure.

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Monterotondo, Italy

Antonio Rossodivita