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Structure determinations of cyclopenta[b]thiapyrans

โœ Scribed by Yasuyoshi Hasegawa; Yasushi Kai; Kunio Miki; Nobuo Tanaka; Nobutami Kasai; Yoshio Aso; Masahiko Iyoda; Masazumi Nakagawa

Book ID
104234160
Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
255 KB
Volume
22
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

The detailedImolecular structures of substituted cyclopenta[b]thiapyrans were studied by means of H-NMR spectroscopy and X-ray diffraction method. In the preceeding paper, we reported acid-catalyzed intramolecular cyclization of 2,6-octadiene-4-ynedial derivatives to substituted cyclopenta[b]thiapyrans (J,, g, and 2).

๐Ÿ“œ SIMILAR VOLUMES

A novel acid-catalyzed transformation of
A novel acid-catalyzed transformation of octadienynedial derivatives to cyclopenta[b]-thiapyrans and cyclopenta[b]pyran.
โœ Yoshio Aso; Masahiko Iyoda; Setsuko Fujisawa; Shunro Yamaguchi; Masazumi Nakagaw ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 234 KB

Substituted 2,6-octadien-4-ynedial derivatives were synthesized, which give cyclopenta[b]thiapyran or cyclopenta[b]pyran derivatives by intramolecular cyclization. During the course of studies on dehydroannulenesl), we have investigated the synthesis of substituted octadienynedial derivatives which