Three-component synthesis of 2-amino-3-cyano-4H-pyrans and a new version of the pyran ring opening

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发表日期：

2024年6月1日

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I. V. Dyachenko,
V. D. Dyachenko,
P. V. Dorovatovskii,
V. N. Khrustalev,
V. G. Nenajdenko

摘要

Fused 2-amino-3-cyano-4H-pyrans were synthesized by the tandem Knoevenagel—Michael reaction. A previously unknown version of the ring opening of 2-amino-3-cyano-4H-pyrans giving substituted 2,6-dicyanoaniline was discovered. The structure of the latter compound was established by X-ray diffraction.