In a Wittig Reaction, I used 0.175 g of 4-nitrobenzaldehyde and 0.467 g of benzyltriphenylphosphonium to...

In a Wittig Reaction, I used 0.175 g of 4-nitrobenzaldehyde and 0.467 g of benzyltriphenylphosphonium to yield 4-nitrostilbene. I am trying to find the percent yield for crude and trans product. In this experiment, the crude produt contains cis and trans product and we used recrystalized the crude product to get the trans product only. I have a basic idea of finding percent yields. I have found that 4-nitrobenzaldehyde is the limiting reagent and multiplied that number of moles by the molar weight of 4-nitrostilbene. (I believe this is for the crude product?) But I am wondering if the theoretical yields for crude and trans only should be different. The actual yield I got for crude is 0.6888g and the trans is 0.0916g. Thanks

Expert Solution

queen_honey_blossom answered 2 years ago

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