January 24, 2022, 05:27:25 AM
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Topic: allyl pattern in nmr  (Read 202 times)

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Offline myabaumbach

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allyl pattern in nmr
« on: December 15, 2021, 10:44:54 AM »
How does allyl protons appear in HNMR
I have doublet at 4 ppm, two doublets at 5-5.5 ppm and multiplet at 6 ppm
how can this be explained

Offline phth

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Re: allyl pattern in nmr
« Reply #1 on: January 02, 2022, 08:51:28 PM »
What are the J coupling values? Are there multiple J coupling values per each proton?

Offline wildfyr

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Re: allyl pattern in nmr
« Reply #2 on: January 03, 2022, 11:20:47 AM »
Yep, that is HIGHLY characteristic of allyl.

You can look up some allyl compounds on the public site SDBS for examples.

https://sdbs.db.aist.go.jp/sdbs/cgi-bin/cre_index.cgi

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