Re: ORGLIST: Benzylchloroformate distillation

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From: Jacob Zabicky (Jacob.Zabicky$##$uab.es)
Date: Fri Jan 01 1904 - 05:36:41 EST

>Date: Fri, 1 Jan 1904 11:31:42 +0100
>Dear Rita,
>
>It seems that anything you could do to purify the old stuff would be much
>more expensive than buying some fresh reagent. Furthermore, the substrate
>you want to protect may also be expensive; why exposing it to the risk of
>low yields in the protection step, with further losses in time and money?
>
>all the best,
>
>Jacob
>
>>Dear friends,
>>
>>I am trying to distil some older benzylchloroformate (cbz-cl) to use
>>in a protection. The contaminants are benyl alcohol and water. I
>>have tried distilling it once under vacuum (0.4mm, it is suppose to
>>decompose over 105) carefully cutting fractions but most of my major
>>component is still contaminated.
>>
>>Should I distill it from something or dry it over sieves or?
>>
>>Thank you for your help.
>>Rita S. Majerle
>>Associate Professor
>>Dept of Chemistry and Biochemistry
>>South Dakota State University
>>Brookings, SD 57007
>>
>>Voice: (605) 688-6260
>>FAX: (605) 688-6364
>>__________________
>>
>>ORGLIST - Organic Chemistry Mailing List
>>Website / Archive / FAQ: http://www.orglist.net/
>>List coordinator: Joao Aires de Sousa (jas$##$mail.fct.unl.pt)
>
>
>

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