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We have established an efficient method for preparing methyl bis ( 2 , 2 , 2 - trifluoroethoxy ) bromophosphonoacetate , which we developed for the stereoselective synthesis of ( E ) - alpha - bromoacrylates .
 Chemical: methyl bis ( 2 , 2 , 2 - trifluoroethoxy ) bromophosphonoacetate; Chemical: ( E ) - alpha - bromoacrylates
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: methyl bis ( 2 , 2 , 2 - trifluoroethoxy ) bromophosphonoacetate; Chemical: ( E ) - alpha - bromoacrylates