2-nitrobenzyl triphenylphosphonium bromide

P 59] A third protocol differed from [P 57] and [P 58] by sequential insertion of all reactants instead of using a pre-mixed solution of nitrobenzyltriphenyl-phosphonium bromide and sodium methoxide. As above, flow was fed by electroosmotic means [13]. A 40 pi volume of a methanol solution of 0.01 M 2-nitrobenzyl-triphenylphosphonium bromide was filled into the first reservoir, 40 pi of a methanol solution of 0.015 M sodium methoxide in the second, 40 pi of a methanol solution... 

OS 78] [R 4a] [P 58] The Wittig reactions of five aldehydes with 2-nitrobenzyl-triphenylphosphonium bromide were investigated also at a 1 1 stoichiometric ratio [13]. Using optimized reaction conditions, improved yields were found for four of the five aldehydes. 

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