Synlett

Exceptionally active catalysts for the formation of carbamates from alcohols and isocyanates: Molybdenum (VI) dichloride dioxide and its DMF complex

C Stock, R Brückner

文献索引：Stock, Christian; Brueckner, Reinhard Synlett, 2010 , # 16 p. 2429 - 2434

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被引用次数: 8

摘要

Abstract Small amounts of MoO 2 Cl 2 or MoO 2 Cl 2 (DMF) 2 catalyze carbamate formation from an alcohol and isocyanates: 0.1 mol% of the respective additive allow primary, secondary or tertiary alcohols to add to aliphatic or aromatic isocyanates of varied steric hindrance within 20 minutes at room temperature. Typically the corresponding carbamate resulted in 100% yield. Only particularly hindered substrates required 1.0 mol% of the ...