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A.T. Balaban, M.D. Gheorghiu, I.C. Shcherbakova, E.V. Kuznetsov and I.A. Yudilevich, 2-benzopyrylium salts—XXXI. Analogs of reissert compounds from 2-benzopyrylium salts and sodium cyanide: Tetrahedron 43, 409 (1987)

Publisher: Elsevier Science
Year: 1987
Tongue: French
Weight: 27 KB
Volume: 43
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(01)90017-1

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✦ Synopsis

The footnote is marked with an asterisk after the only text's mention of the reference 1141: . . . and the only example of 1 -cyano-1 -IV-R-amidoisochromenes [ 141. + *Nevertheless the sharp CN stretching band at 2230 cm-' can be discovered in cyanoisochromenes II a-h after an accumulation and a scanning of a signal on a Shimadzu IR instrument as will be described in a following paper.

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2-benzopyrylium salts. xxxi : Analogs of

2-benzopyrylium salts. xxxi : Analogs of reissert compounds from 2-benzopyrylium salts and sodium cyanide

✍ Alexandru T. Balaban; Mircea D. Gheorghiu; Irina V. Shcherbakova; Evgenii V. Kuz 📂 Article 📅 1987 🏛 Elsevier Science 🌐 French ⚖ 420 KB

Nucleophilic aldition of u cyanide anion to 2-benwpyryliwn salt8 I takes place at the firet position end led8 to stable i8ochzvmene8 II, which are oxygen anabgs of Reissert aqXUnd8. The structure II uaa a~nfirmed by IR, 'H-NM? and '3C-NMR spectra. The tatter epectra reveal clearly the cyarr, gzup (w