Effect of successive increase in alcohol chains on reaction with isocyanates and isothiocyanates
S Perveen, A Yasmin, KM Khan
Index: Perveen, Shahnaz; Yasmin, Arfa; Khan, Khalid Mohammed Natural Product Research, 2010 , vol. 24, # 1 p. 18 - 23
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Abstract
The reaction of isocyanates and isothiocyanates with long-chain alcohols, eg n-hexanol, n- heptanol and n-octanol, exclusively gave N-aryl-O-alkyl carbamates, while N-aryl-O-alkyl carbamates were formed along with symmetrical 1, 3-disubstituted ureas and thioureas when the same reactions were carried out with small-chain alcohols at room temperature without using any solvent.
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