About LEONARD N J
About Univ. Illinois, IL, USA
About KAZMIERCZAK F
About Univ. Illinois, IL, USA
About RYKOWSKI A
About Inst. Organic Chemistry, Polish Academy of Sciences, Warsaw, POL
About Journal of Organic Chemistry
About carboxylic acid
About benzimidazoles
About Pyrimidines
About 中間体
About 簡便
About 合成法