发明授权
US5608074A Process for the synthesis of 5-amino tetrazole derivatives 失效
合成5-氨基四唑衍生物的方法

Process for the synthesis of 5-amino tetrazole derivatives
摘要:
An improved process for the preparation of 3-chlorobenzo[b]thiophene-2-carbonyl chlorides is described where a cinnamic acid is converted in the presence of thionyl chloride and a 4-N,N'-disubstituted aminopyridine in one step to the desired product.
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