| 摘要 |
<p>Novel industrial products consisting of phosphinite-borane compounds are disclosed, having general formula (IO) in which R?1 and R2¿ are the same or different and each represent a C¿1?-C18 alkyl group, a C5-C18 cycloalkyl group, a C7-C18 aralkyl group or a C6-C14 aryl group, each of these groups being capable of carrying functional groups; R?3¿ is a C¿1?-C18 alkyl group, a C5-C18 cycloalkyl group, a C7-C18 aralkyl group, a C6-C14 aryl group, a C1-C18 alkoxy group, a C7-C18 cycloalkyloxy group, a C7-C18 aralkyloxy group, or a C6-C14 aryloxy group; Z represents a bridge linking the two phosphorus atoms, the said bridge being (i) a hydrocarbon chain with 1 to 12 catenary C atoms, or (ii) a heterohydrocarbon chain containing 1 to 12 catenary C atoms and at least a catenary heteroatom chosen from O, S, Si, P and N; with the further proviso that (i) Z is different from CH2 when simultaneously R?1¿ is phenyl and R2 = R3 = methyl, and (ii) Z is different from CH¿2?CH2 when simultaneously R?1¿ is phenyl, R2 is methyl and R3 is methoxy. These products are useful in the synthesis of chiral diphosphine compounds.</p> |
