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Synthesis of tosylate precursor of FPOIBG and FPOBBG.
a) (3-Bromopropoxy)-(tert-butyl)-dimethylsilane, Kl, K2CO3, Acetonitrile b) NBS, benzoyl peroxide, Dichloromethane c) (Boc)2guanidine, Pot. tert-butoxide, THF d) TBAF/THF e) 1-Tosyl-3-methyl imidazolinium triflate, 1-methyl imidazole, THF
