Synthesis 2014; 46(19): 2629-2643
DOI: 10.1055/s-0034-1378356
paper
© Georg Thieme Verlag Stuttgart · New York

Palladium-Catalyzed Ring Opening of Cyclopropane-Appended Spirotricyclic Olefins with Soft Nucleophiles and Organoboronic Acids: Facile Synthesis of Functionalized Spiro[2.4]heptenes

Eliyan Jijy
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   Email: radhu2005@gmail.com
,
Praveen Prakash
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   Email: radhu2005@gmail.com
,
Thekke Veettil Baiju
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   Email: radhu2005@gmail.com
b   Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
,
Manchery Shimi
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   Email: radhu2005@gmail.com
b   Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
,
Yoshinori Yamamoto*
c   WPI-AIMR (Advanced Institute for Materials Research), Tohoku University, Katahira 2-1-1, Aobaku, Sendai 980-8577, Japan   Fax: +81(22)2175979   Email: yoshi@mail.tains.tohoku.ac.jp
,
Eringathodi Suresh
d   Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
,
Kokkuvayil Vasu Radhakrishnan*
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   Email: radhu2005@gmail.com
b   Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
› Author Affiliations
Further Information

Publication History

Received: 21 April 2014

Accepted after revision: 02 June 2014

Publication Date:
14 July 2014 (online)


Abstract

The palladium-catalyzed ring opening of cyclopropane- and vinylcyclopropane-appended spirotricyclic olefins by employing active methylene compounds, phenols and organoboronic acids is discussed in detail. The present strategy provides a facile route for the synthesis of biologically significant, functionalized spiro[2.4]heptenes under mild reaction conditions. The synthetic utility of the described compounds is emphasized by the preparation of the corresponding iodolactone derivatives and a highly substituted spiro[2.4]heptane.

Supporting Information