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October 21, 2025, 06:28:15 pm
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Author Topic: NMR challenge  (Read 841 times)  Share 

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Mao

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NMR challenge
« on: May 21, 2009, 11:16:10 am »
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A challenge that I am yet to solve... I think I might have the answer.

Here's the data

1H NMR,
Peak A: singlet peak (integration = 1) at
Peak B: doublet peak (integration = 2) at
Peak C: doublet peak (integration = 2) at , peak separation is the same as peak B.

Microanalysis:
C55.63, H3.33, N9.27, O31.76

IR,
Peak A: weak narrow peak at 2850
Peak B: Strong narrow peak at 1770
Peak C: weak narrow peak at 1620
Peak D: strong narrow peak at 1580
Peak E: strong narrow peak at 1370

Mass Spectrum
Base Peak = Parent Peak = 151(150,152)
Other major peaks: 51(50), 77(78,76,75,74,73), 105(104)
(bracketed are 'sub' peaks, indicating addition/loss of a proton)
« Last Edit: May 21, 2009, 11:19:43 am by Mao »
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