2,2,5,5-四甲基-4-苯基-3-咪唑啉-3-氧化物-1-氧基的合成路线有哪些？

基本信息：
中文名称 2,2,5,5-四甲基-4-苯基-3-咪唑啉-3-氧化物-1-氧基
中文别名 4-苯基-2,2,5,5-四甲基-3-咪唑啉-1-基氧代-3-氧化物自由基;
英文名称 2,2,5,5-TETRAMETHYL-4-PHENYL-3-IMIDAZOLINE-3-OXIDE-1-OXYL
英文别名 4-phenyl-2,2,5,5-tetramethyl-3-imidazolin-1-yloxy-3-oxide;2,2,5,5-tetramethyl-1-oxyl-4-phenylimidazoline-3-oxide;2,5-dihydro-4-phenyl-2,2,5,5-tetramethylimidazol-1-oxyl 3-oxide;[(4-Phenyl-2,2,5,5-tetramethyl-3-imidazoline 3-oxide)-1-yloxy]radical;TPIO;4-phenyl-2,2,5,5-tetramethyl-3-imidazoline-3-oxide-1-oxyl radical;2,2,5,5-tetramethyl-4-phenyl-3-imidazolin-1-oxyl 3-oxide;4-PHENYL-2,2,5,5-TETRAMETHYL-3-IMIDAZOLIN-1-YLOXY-3-OXIDE FREE RADICAL;[(2,2,5,5-Tetramethyl-4-phenyl-3-imidazoline-3-oxide)-1-yloxy]radical;
CAS号 18796-03-7

合成路线：
1.通过1-羟基-2,2,5,5-四甲基-4-苯基-3-咪唑啉-3-氧化物合成2,2,5,5-四甲基-4-苯基-3-咪唑啉-3-氧化物-1-氧基，收率约59%；

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