A Convenient Synthesis of Cycloalkylphosphonates from (Phenylsulfonyl)methylphosphonate
摘要:
Cycloalkylphosphonate derivatives were synthesized in excellent overall yields, in two steps by the bis-alkylation of (phenylsulfonyl)methylphosphonate with omega-dibromoalkanes in the presence of a phase transfer catalyst followed by desulfonation.
This dual catalytic regime exhibited high efficiency and good functional group compacity. A wide variety of substrates bearing a diverse set of functional groups could be converted into chiral phosphates in good to excellent yields and enantioselectivities. The utility of the method was also demonstrated by the development of a new phosphine ligand and the synthesis of enzyme inhibitor derivatives