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Topic: chlorination with SO2cl2  (Read 937 times)

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Offline sayantan dutta

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chlorination with SO2cl2
« on: August 28, 2020, 03:16:33 AM »
for allylic chlorination .SO2Cl2 is used but not N chloro succinide(NCS)
but for allylic bromination NBS is the best choice to use
why NCS not used ?
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Offline chenbeier

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Re: chlorination with SO2cl2
« Reply #1 on: August 28, 2020, 04:19:59 AM »
I think it is vise versa. SO2Br2 is not existing, so NBS can only be used. For chlorination SO2Cl2  is existing and can be used. NCS is also possible.
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Offline sayantan dutta

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Re: chlorination with SO2cl2
« Reply #2 on: August 28, 2020, 04:28:56 AM »
yes ncs can also be used but not a best choice ....my question is why it's not a best choice .
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Offline Babcock_Hall

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Re: chlorination with SO2cl2
« Reply #3 on: August 28, 2020, 10:17:23 AM »
If you are planning to use SO2Cl2, my suggestion is to distill it shortly before use.  There was a low boiling impurity, at least the material that I had.  If this is purely a hypothetical exercise, then please excuse the intrusion.
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