Synlett 2014; 25(6): 853-857
DOI: 10.1055/s-0033-1340715
letter
© Georg Thieme Verlag Stuttgart · New York

N-Heterocyclic Carbene Mediated Homoenolate Annulation of Benzofuran-2,3-diones: Stereoselective Synthesis of Bis-Spirofuranones

K. C. Seetha Lakshmi
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   eMail: vijaynair_2001@yahoo.com
b   School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, India
,
Rony Rajan Paul
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   eMail: vijaynair_2001@yahoo.com
,
Eringathodi Suresh
c   Analytical Department and Centralized Instrument Facility (CSIR-CSMCRI), Bhavnagar 364002, Gujarat, India
,
Vijay Nair*
a   Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019, India   Fax: +91(471)2491712   eMail: vijaynair_2001@yahoo.com
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Publikationsverlauf

Received: 19. November 2013

Accepted after revision: 13. Januar 2014

Publikationsdatum:
10. Februar 2014 (online)


Abstract

Stereoselective synthesis of bis-spirofuranones via N-heterocyclic carbene catalyzed homoenolate annulations of benzofuran-2,3-diones is reported.

Supporting Information