发明申请
US20090286978A1 METHOD FOR PRODUCING BICYCLIC GUANIDINES BY USE OF A CYCLIC THIOUREA 有权
通过使用循环硫酸生产双相性胍类的方法

METHOD FOR PRODUCING BICYCLIC GUANIDINES BY USE OF A CYCLIC THIOUREA
摘要:
The present invention is directed to a method producing bicyclic guanidine comprising heating a cyclic thiourea to a temperature ranging from ≧140° C. in a substantially non-hydrocarbon solvent to form the bicyclic guanidine.
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