Novel Ni(C0)4-promoted tandem cycloadditions of diphenylcyclo- propenone 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-5′-thiolene-4′-one, respectively, in moderate yields.
发现新的Ni(C0)4促进的
二苯基环丙烯酮串联环加成反应向异
硫氰酸酯和CS 2提供新的杂环螺烷,
吡咯啉-2-一-5-螺5-5'-
硫代-4'-和
硫代烯。 -2-one-5-spiro-5'-thiolene-4'-one分别以中等收成。