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Synthesis of bis-POM-protected difluoromethylphosphonocinnamates for incorporation into prodrugs.
Reagents and conditions (i) (EtO)2POCH2CO2tBu; (ii) BrCdCF2PO3Et2, CuCl; (iii) (a) TFA, (b) C6Cl5OH, DCC; (iv) TMS-I; (v) (a) NaOH, (b) AgNO3, (c) POM-I.
