Effect of successive increase in alcohol chains on reaction with isocyanates and isothiocyanates
作者:Shahnaz Perveen、Arfa Yasmin、Khalid Mohammed Khan
DOI:10.1080/14786410802270738
日期:2010.1.10
The reaction of isocyanates and isothiocyanates with long-chain alcohols, e.g. 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.
异氰酸酯和异硫氰酸酯与长链醇,例如将反应Ñ己醇,Ñ庚醇和Ñ辛醇,只给Ñ -芳基- ø -烷基氨基甲酸盐,而Ñ -芳基- ö烷基用对称沿形成氨基甲酸酯当在不使用任何溶剂的情况下与小链醇在室温下进行相同的反应时,1,3-二取代的脲和硫脲。