9778
The isosteric character of phosphonic and carboxylic acid derivatives allowed the alternative use of an alpha - cyano diazo ester in the process , leading to alpha - cyano cycloprop ( en ) ylcarboxylates in high yields and stereoselectivities .
 Chemical: phosphonic and carboxylic acid; Chemical: alpha - cyano diazo ester; Chemical: alpha - cyano cycloprop ( en ) ylcarboxylates
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: phosphonic and carboxylic acid; Chemical: alpha - cyano diazo ester; Chemical: alpha - cyano cycloprop ( en ) ylcarboxylates