Abstract
In the study of the nucleophilic addtion reaction of dialkyl I-hydroxyphosphonate and dichloropyrimidinyl isocyanate. We found this reaction was a convenient way for the synthesis of 1-(substituted carbamy1oxy)alkyl phosphonatc derivative. Dialkyl 1 - hydroxyphos-phonate can be easily prepared by addtion of dialkylphosphitc to carbonyl compounds. 4,6-dicloro-2-isocyanato pyrimidine can be synthesized by the reaction of oxalyl chloride and 2-amino-4,6-dichloropyrimidine which can be obtained from 2-amino-4,6-dihydroxy pyrimidine.
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