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Asymmetric Synthesis of Spiro Tetrahydrothiophene-indan-1,3-diones via a Squaramide-Catalyzed Sulfa-Michael/Aldol Domino Reaction

Synthesis (Germany) (2016) 48(8) 1131-1138
DOI: 10.1055/s-0035-1560412
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Abstract

A new asymmetric domino sulfa-Michael/aldol reaction of 2-arylidene-1,3-indandiones with 1,4-dithiane-2,5-diol catalyzed by a sub-mol% loading of a squaramide provides a direct access to tetrahydrothiophene bearing spiro indane-1,3-dione derivatives in excellent yields and good stereoselectivities.

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Mahajan, S., Chauhan, P., Blümel, M., Puttreddy, R., Rissanen, K., Raabe, G., & Enders, D. (2016). Asymmetric Synthesis of Spiro Tetrahydrothiophene-indan-1,3-diones via a Squaramide-Catalyzed Sulfa-Michael/Aldol Domino Reaction. Synthesis (Germany), 48(8), 1131–1138. https://doi.org/10.1055/s-0035-1560412

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