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Topic: Carbon 13 NMR Chemical Shift  (Read 4231 times)

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gimlipig

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Carbon 13 NMR Chemical Shift
« on: February 07, 2005, 05:45:19 PM »
Can someone tell me if the Carbon 13 NMR shift for ROCH3 be the same or similar to the Carbon 13 NMR shift for RCH2OR (which is 50-65 ppm)? I this is as close as I've been able to find.

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Re:Carbon 13 NMR Chemical Shift
« Reply #1 on: February 07, 2005, 10:20:42 PM »
If R is alkyl in both cases, then yes, they should be close.  R-O-CH3 should be upfield from RO-CH2-R

Example: methyl butyl ether has shifts of 59.1 and 73.4 ppm (CH3 and CH2, respectively).

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