Cycloaddition of oxetanes with heterocumulenes catalyzed by organotin iodide??lewis base complex

…, T Imoto, A Baba, H Matsuda

Index: Shibata, Ikuya; Imoto, Takafumi; Baba, Akio; Matsuda, Haruo Journal of Heterocyclic Chemistry, 1987 , vol. 24, p. 361 - 363

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Citation Number: 13

Abstract

Abstract A series of 2-oxazinones 1-8 were synthesized from the cycloaddition reactions of oxetanes with isocya-nates by utilizing the complex of diphenyltin diiodide with hexamethylphosphoric triamide (HMPA) as a catalyst. Moreover, the reactions with carbodiimides proceeded under milder conditions with the same catalyst system, and gave 2- iminooxazines, 9 and 10, in high yields.