发明授权
US5200522A Method for preparing 3-amino-2-chloro-4-alkylpyridines 失效
制备3-氨基-2-氯代-4-氨基吡啶的方法

Method for preparing 3-amino-2-chloro-4-alkylpyridines
摘要:
A process for the preparation of a 3-amino-2-chloro-4-alkylpyridine of the formula: ##STR1## wherein R is alkyl of from one to three carbon atoms, an intermediate in the preparation of certain 5,11-dihydro-6H-dipyrido[3,2-b:2',3'-e][1,4]diazepine compounds useful in the prevention and treatment of HIV infection.
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