中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-氯-3-苯氧基-2-丙醇 | (RS)-1-chloro-3-phenyloxy-2-propanol | 4769-73-7 | C9H11ClO2 | 186.638 |
烯丙基苯基醚 | allyl phenyl ether | 1746-13-0 | C9H10O | 134.178 |
Heterogeneous polymer-supported triphenylphosphine oxides based on the rasta resin architecture have been synthesized, and applied as reagent precursors in a wide range of halogenation reactions. The rasta resin–triphenylphosphine oxides were reacted with either oxalyl chloride or oxalyl bromide to form the corresponding halophosphonium salts, and these in turn were reacted with alcohols, aldehydes, aziridines and epoxides to form halogenated products in high yields after simple purification. The polymer-supported triphenylphosphine oxides formed as a byproduct during these reactions could be recovered and reused numerous times with no appreciable decrease in reactivity.
A simple, novel, and highly regioselective cleavage of epoxides into vicinal halo alcohols and symmetrical or unsymmetrical dihalides is described using different stoichiometries of triphenylphosphine (PPh3) and N-halo succinimide (NXS) or N-halo saccharine (NXSac).Key words: N-halo succinimide (NXS), N-halo saccharine (NXSac), triphenylphosphine (PPh3), epoxide, vic-halo alcohol, symmetrical dihalide, unsymmetrical dihalide.