Synthesis 2021; 53(13): 2253-2259
DOI: 10.1055/a-1348-4311
paper

Synthesis of Substituted β-Styrylmalonates by Sequential Isomerization of 2-Arylcyclopropane-1,1-dicarboxylates and (2-Arylethylidene)malonates

Denis D. Borisov
a   N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
,
Grigorii R. Chermashentsev
a   N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
b   Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation
,
Roman A. Novikov
a   N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
,
Yury V. Tomilov
a   N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
› Author Affiliations
This work was supported by the Russian Science Foundation (grant No. 19-73-00258).


Abstract

A method has been developed for the synthesis of substituted β-styrylmalonates by conversion of 2-arylcyclopropane-1,1-dicarboxylates (ACDCs) in the presence of gallium trichloride into the corresponding­ 1,2-zwitterionic intermediates or (2-arylethyl­idene)malonates, followed by treatment with pyridine at room temperature leading to an isomerization of the emerging double bond. This method allows one to expand these reactions to include ACDCs with acceptor substituents at the aromatic ring.

Supporting Information



Publication History

Received: 06 December 2020

Accepted after revision: 08 January 2021

Accepted Manuscript online:
08 January 2021

Article published online:
22 February 2021

© 2021. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany