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Novel synthesis of heterocyclic spirans by tandem cycloaddition to sulfur-containing heterocumulenes

✍ Scribed by Yoshiki Ohshiro; Hitoshi Nanimoto; Hiroyuki Tanaka; Mitsuo Komatsu; Toshio Agawa; Noritake Yasuoka; Yasushi Kai; Nobutami Kasai

Book ID: 104228757
Publisher: Elsevier Science
Year: 1985
Tongue: French
Weight: 260 KB
Volume: 26
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)98606-4

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✦ Synopsis

Novel Ni(C0)4-promoted tandem cycloadditions of diphenylcyclopropenone to isothiocyanates and to CS2 were found to provide new heterocyclic spirans, pyrroline-2-one-5-Spiro-5 '-thiolene-4'-ones and a thiolene-2-one-5-spiro-S'-thiolene-4'-one, respectively, in moderate yields.

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