Base-catalyzed reactions of isocyanates. Synthesis of 2, 4-dialkylallophanates

H Ulrich, B Tucker, AAR Sayigh

文献索引：Ulrich,H. et al. Journal of Organic Chemistry, 1967 , vol. 32, p. 3938 - 3941

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被引用次数: 16

摘要

The reaction of methyl isocyanate with phenols, thiophenols, and thiols in the presence of potassium t-butoxide occurs readily to afford, depending on the stoichiometry, either the corresponding carbamates and thiocarbamates or the corresponding 2, 4- dialkylallophanates and 2, 4-dialkylthioallophanates. Trace amounts of triisocyanurate were found in the allophanate-forming reactions. Under the same conditions, however, the ...