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Topic: chlorination with SO2cl2  (Read 672 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 ?

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.

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 .

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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