Synthesis 2013; 45(17): 2397-2404
DOI: 10.1055/s-0033-1338498
paper
© Georg Thieme Verlag Stuttgart · New York

1,3-Dipolar Cycloadditions of the Versatile Intermediate Tetraethyl Vinylidenebisphosphonate­

Mariana Ferrer-Casal
Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina, Fax: +54(11)45763346   Email: shs@qo.fcen.uba.ar   Email: jbr@qo.fcen.uba.ar
,
Alejandro P. Barboza
Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina, Fax: +54(11)45763346   Email: shs@qo.fcen.uba.ar   Email: jbr@qo.fcen.uba.ar
,
Sergio H. Szajnman*
Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina, Fax: +54(11)45763346   Email: shs@qo.fcen.uba.ar   Email: jbr@qo.fcen.uba.ar
,
Juan B. Rodriguez*
Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina, Fax: +54(11)45763346   Email: shs@qo.fcen.uba.ar   Email: jbr@qo.fcen.uba.ar
› Author Affiliations
Further Information

Publication History

Received: 06 May 2013

Accepted after revision: 31 May 2013

Publication Date:
10 July 2013 (online)


Abstract

The use of tetraethyl vinylidenebisphosphonate as a dipolarophile in 1,3-dipolar cycloaddition reactions was investigated. In particular, the cycloaddition reactions between tetraethyl vinylidenebisphosphonate and azides and nitrile oxides, and of tetraethyl vinylidenebisphosphonate in the Grigg azomethine 1,3-dipolar cyclization were studied, affording highly functionalized five-membered rings containing the bisphosphonic unit. These straightforward methods allow the preparation of diverse and fairly complex structures bearing the bisphosphonate moiety, which belong to a group of pharmacologically important compounds.

Supporting Information