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Secondary aminopentene cyclizations require a primary amine ( 1 - 2 equiv vs catalyst ) .
 Chemical: Secondary aminopentene; Chemical: primary amine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Secondary aminopentene; Chemical: primary amine