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The fluorous tertiary phosphine [R f6 -(CH 2 ) 2 ] 3 P [R fn =CF 3 (CF 2 ) n-1 ] and excess PhCH 2 Br, CH 3 (CH 2 ) 3 OSO 2 CF 3 , or R f6 (CH 2 ) 2 OSO 2 CF 3 react (CF 3 C 6 H 5 , 45-110 °C) to(More)