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Polyethylene glycol acyl halides

NaBHi in polyethylene glycols." NaBH, in PEG, particularly PEG 400, is more reactive than NaBH4 in the usual hydroxy lie solvents, possibly because a sodium dialkoxy-borohydride is generated. This system reduces esters and acyl chlorides to primary alcohols, and halides or tosylates to hydrocarbons. [Pg.444]

Poly(oxyethylene) units can be introduced by using commercially available polyethylene oxide)s and poly (ethylene glycol) s via esterification of the terminal hydroxyl groups with appropriate acyl halides. Various AB- (B-123 and B-124) and ABA-type (B-125 and B-126) block copolymers were thus prepared,171 327 405 408 along with a polypropylene oxide)-based version (B-l27).404 The polymer coupling be-... [Pg.496]

See other pages where Polyethylene glycol acyl halides is mentioned: [Pg.36]    [Pg.263]    [Pg.28]    [Pg.406]    [Pg.1015]    [Pg.1017]   
See also in sourсe #XX -- [ Pg.240 ]

See also in sourсe #XX -- [ Pg.8 , Pg.240 ]

See also in sourсe #XX -- [ Pg.8 , Pg.240 ]



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