[P:1]([Cl:5])(Cl)([Cl:3])=[O:2].[Br:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1>>[P:1]([Cl:5])([Cl:3])(=[O:2])[O:13][C:10]1[CH:11]=[CH:12][C:7]([Br:6])=[CH:8][CH:9]=1Phosphorous oxychloride is reacted with a para-bromophenol moiety to form para-bromophenyl phosphorodichloridate. Without purification, the para-bromophenyl phosphorodichloridate is contacted with alanine methyl ester to produce para-bromophenyl methoxyalaninyl phosphorochloridate. Without purification, the para-bromophenyl methoxyalaninyl phosphorochloridate is reacted with AZT.
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