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

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

Full Text: HTML

Citation Number: 8

Abstract

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 ...

Related Articles:

Titanocene (III)-catalyzed conversion of N-(epoxyalkyl) anilines into indolines

[MacIejewski, John P.; Wipf, Peter Arkivoc, 2011 , vol. 2011, # 6 p. 92 - 119]

Reaction of organozinc halides with aryl isocyanates

[Yang, Haoran; Huang, Danfeng; Wang, Ke-Hu; Xu, Changming; Niu, Teng; Hu, Yulai Tetrahedron, 2013 , vol. 69, # 12 p. 2588 - 2593]

Convenient method for the preparation of carbamates, carbonates, and thiocarbonates

[Shimizu, Mamoru; Sodeoka, Mikiko Organic Letters, 2007 , vol. 9, # 25 p. 5231 - 5234]

Hindered ureas as masked isocyanates: Facile carbamoylation of nucleophiles under neutral conditions

[Hutchby, Marc; Houlden, Chris E.; Gair Ford; Tyler, Simon N. G.; Gagne, Michel R.; Lloyd-Jones, Guy C.; Booker-Milburn, Kevin I. Angewandte Chemie - International Edition, 2009 , vol. 48, # 46 p. 8721 - 8724]

Synthesis of (–)??Oseltamivir by Using a Microreactor in the Curtius Rearrangement

[Ishikawa, Hayato; Bondzic, Bojan P.; Hayashi, Yujiro European Journal of Organic Chemistry, 2011 , # 30 p. 6020 - 6031]

More Articles...