n-butyllithium in hexane; Petroleum ether byproducts: butane, LiBr; the urea in petroleum ether was refluxed under N2 with n-BuLi in hexanefor 48 h; the solvents were removed in vac., the residue was fractional distd.; elem. anal.;
参考文献
Maringgele, Walter
Chemische Berichte, 1982 , vol. 115, # 10 p. 3271 - 3289
