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Subject: Re: [DCHAS-L] [NAOSMM] Experience with 4-methylcyclohexene Lab
Date: Wednesday, October 31, 2018 at 1:18:11 PM
Author: Samuella Sigmann <sigmannsb**At_Symbol_Here**appstate.edu> 		Next by Date:
Subject: [DCHAS-L] Klystron
Date: Wed, 31 Oct 2018 19:49:33 +0000
Author: Wayne Wood

From: William McMahon <wmcmahon**At_Symbol_Here**SUNYJEFFERSON.EDU>
Subject: Re: [DCHAS-L] Experience with 4-methylcyclohexene Lab
Date: Wed, 31 Oct 2018 17:42:14 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 38af508e056d4b799eedd7cef95e929d**At_Symbol_Here**JCCEXCH2.sunyjefferson.lan
In-Reply-To <1109037139E1524980CF9CBEB24766180118B44D5B**At_Symbol_Here**UMF-EX10EMB1.umflint.edu>


Good afternoon - We conduct this experiment in organic chemistry 2 on our campus (microscale) and have successfully substituted Dowex (strong cation exchange resin) in place of the Conc. sulfuric and phosphoric acid. I will attempt to locate a copy of the lab write-up and send to you.

Thanks and have a great day-Bill

-----Original Message-----
From: NAOSMM On Behalf Of Wilhelm, Monique
Sent: Wednesday, October 31, 2018 1:15 PM
To: naosmm**At_Symbol_Here**listserv.rice.edu; DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [NAOSMM] Experience with 4-methylcyclohexene Lab

Hi everyone,

I am reaching out to see if anyone has experience with the dehydration of 4-methylcyclohexanol to 4-methylcyclohexene lab in the Pavia et al lab textbook. The reaction seems to call for an awful lot of H2SO4 in addition to H3PO4 and is giving off several noxious odors. I would like to recommend getting rid of the H2SO4 but am concerned about whether this may cause unwanted organophosphates to be produced. I am concerned as I cannot figure out what kind of byproduct or decomp products we may be getting.

Does anyone have any thoughts on this? I am not an organic chemist, so maybe I am just overthinking this one too much.


Monique
_________________________________________________________
Monique Wilhelm, M.S., NRCC Certified CHO ACS CHAS Secretary|2017 CERM E. Ann Nalley Award Recipient Laboratory Manager|Adjunct Lecturer|Chemistry Club Advisor Department of Chemistry & Biochemistry|University of Michigan-Flint

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