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Website / Archive / FAQ: http://www.orglist.net To post a message (TO EVERYBODY) send to everybody@orglist.net To unsubscribe, send to everybody-request@orglist.net the message: unsubscribe your_orglist_password your_address List coordinator: Joao Aires de Sousa (coordinator@orglist.net) Send Everybody mailing list submissions to everybody@orglist.net To subscribe or unsubscribe via the World Wide Web, visit http://two.pairlist.net/mailman/listinfo/everybody or, via email, send a message with subject or body 'help' to everybody-request@orglist.net You can reach the person managing the list at everybody-admin@orglist.net When replying, please edit your Subject line so it is more specific than "Re: Contents of Everybody digest..." JULY – DECEMBER 2002 Digest #36 Today's Topics: 1. Nitrophthalic acid (dr samy said) --__--__-- Message: 1 Date: Tue, 2 Jul 2002 04:17:41 -0700 (PDT) From: dr samy said <sbsaid@yahoo.com> To: Everybody@orglist.net Subject: ORGLIST:Nitrophthalic acid Hi Every Body I`m looking for method for esterification of 3-/or 4-nitrophthalic acid. Thank you very much Samy B. Said sbsaid@yahoo.com --__--__-- Digest #37 Today's Topics: 1. stability of dialkyldisulfide (Jon Kremsky) 2. Re: stability of dialkyldisulfide (Eric J. Leopold) 3. Schiff Base reduction (Jordan, Michael (EI06)) 4. Re: stability of dialkyldisulfide (John S. Roberts) --__--__-- Message: 1 Reply-To: <jkremsky@primeorg.com> From: "Jon Kremsky" <jkremsky@primeorg.com> To: <everybody@orglist.net> Date: Tue, 2 Jul 2002 16:39:08 -0400 Subject: ORGLIST: stability of dialkyldisulfide Colleagues: What is the stability of dialkyldisulfide towards bases, specifically sodium or potassium hydroxide? I have searched some of my general texts, but have been unable to find an answer. Jonathan N. Kremsky, Ph.D. --__--__-- Message: 2 Date: Tue, 2 Jul 2002 17:47:48 -0700 To: <jkremsky@primeorg.com> From: "Eric J. Leopold" <ejlmp@earthlink.net> Subject: Re: ORGLIST: stability of dialkyldisulfide Cc: everybody@orglist.net My guess is this is a stable combination as such compounds are synthesized with KOH or NaOH. See Org Syn. Collective vol 6, 235 (1988), Alonso, et al. Good luck. Eric Need to cleave a peptide-resin? See http://home.earthlink.net/~ejlmp/TMSX1.html --__--__-- Message: 3 From: "Jordan, Michael (EI06)" <jordan.michael.ARK@honeywell.com> To: "'everybody@orglist.net'" <everybody@orglist.net> Date: Wed, 3 Jul 2002 09:51:00 +0200 Subject: ORGLIST:Schiff Base reduction Does anybody know if it is possible to use phase transfer catalysis to reduce imines? > Dr. Michael Jordan --__--__-- Message: 4 From: "John S. Roberts" <johnSRoberts@worldnet.att.net> To: <jkremsky@primeorg.com>, "Eric J. Leopold" <ejlmp@earthlink.net> Cc: <everybody@orglist.net> Subject: Re: ORGLIST: stability of dialkyldisulfide Date: Wed, 3 Jul 2002 06:17:08 -0500 They are stable with KOH or NaOH. John Roberts --__--__-- Digest#38 Today's Topics: 1. DIDNTB reagent request (Ali Asadi) --__--__-- Message: 1 Date: Sat, 6 Jul 2002 04:15:14 -0700 (PDT) From: Ali Asadi <a_alchemist@yahoo.com> To: everybody@orglist.net Subject: ORGLIST:DIDNTB reagent request Hi All , I am seeking for the trade source of " bis(3,3'-diiodo-4,4'-dihydroxy-5,5'-dinitro-phenyl) 3,4,5,6-tetra bromosulfophthalein " its abbreviation is DIDNTB, I will be very thankful if you have any information about this reagent and its manufacturing company. Thanks in advace, Dr. Ali Asadi --__--__-- Digest #39 Today's Topics: 1. MOM-MSf (Bert Kruiswijk) --__--__-- Message: 1 From: Bert Kruiswijk <b.kruiswijk@sbc.bbk.ac.uk> To: everybody <everybody@orglist.net> Date: Wed, 10 Jul 2002 16:26:47 +0100 Subject: ORGLIST:MOM-MSf I am looking for non Russian references for the use of methoxy methyl methyl sulfate (MOM-msf) used by Lebedev for the methoxymethylation of alkenes. Thanks, Bert Kruiswijk --__--__-- Digest #40 Today's Topics: 1. N-Formylation of sec-Amines (Albino RUBELLO) --__--__-- Message: 1 From: "Albino RUBELLO" <rubello.ribbon@libero.it> To: <everybody@orglist.net> Date: Fri, 12 Jul 2002 14:24:56 +0200 Subject: ORGLIST:N-Formylation of sec-Amines Does someone know how the experimental conditions to transform a secondary amine into its N-FORMYL DIMETHYLACETAL DERIVATIVE usind the DIMETHYLACETAL of DMF ? Thanks to all Albino --__--__-- Digest #41 Today's Topics: 1. Citations (MOHAMMAD ARFAN) 2. Regenerating molecular sieve 4A (Andrea Giordano) --__--__-- Message: 1 From: "MOHAMMAD ARFAN" <arfanmohammad@hotmail.com> To: everybody@orglist.net Date: Fri, 12 Jul 2002 15:40:57 +0000 Subject: ORGLIST:Citations Hi Friends, Any one who can tell me a free website or database for obtaining citations of my research articles published in chemistry (mostly organic chemistry) research journals since 1981. Thanks in advance for the help. Mohammad Arfan, Ph.D Professor of Chemistry, Department of Chemistry University of Peshawar, Peshawar, Pakistan --__--__-- Message: 2 Date: Sat, 13 Jul 2002 01:39:01 +0200 From: Andrea Giordano <andrea.giordano@mlib.cnr.it> To: everybody@orglist.net Subject: ORGLIST:Regenerating molecular sieve 4A hello all, this may sound curious, or maybe a nonsense, but anyway... I suppose many of you had the chance to use molecular sieves (the one with blue indicator for istance) to dry/store liquids. Well, when I had to regenerate them, I simply used a common oven for glassware, 'cause it's the only one we have in the lab. Usually temp. is set to 140° C, or something, and we just leave it that way; that value seems to be enough for regenerating the sieves, at least I always observed the apparence of the blue color of the indicator (after having left in the oven for 2/3 days). Anyway, it's written that temp. should be higher for regenerating... Just wondering.....could you use a microwave oven (after having purged the sieves with water, of course...) to regenerate them?? thanks! A. Giordano IMC-CNR Rome. --__--__-- Digest #42 Today's Topics: 1. Re: Citations (Yuehui Zhou) --__--__-- Message: 1 From: "Yuehui Zhou" <yuehuizhou@hotmail.com> To: arfanmohammad@hotmail.com Cc: everybody@orglist.net Subject: Re: ORGLIST:Citations Date: Sat, 13 Jul 2002 20:52:00 +0000 "Web of Science" may be the best tool for that purpose. There may be a free trial for the data base. Try to search the website of this service. Good luck! --__--__-- Digest #43 Today's Topics: 1. Re: Citations (chemelf@gmx.net) --__--__-- Message: 1 From: chemelf@gmx.net Date: Sun Jul 14 2002 - 03:11:42 EDT Subject: Re: ORGLIST: Citations www.chemweb.com - Free registration, free Belstein Abstract since 1980. Best regards, chemelf http://chemelf.tripod.com mailto:chemelf@gmx.net --__--__-- Digest #44 Today's Topics: 1. Re: ORGLIST: Regenerating molecular sieve 4A (Jacob Zabicky) 2. Re: ORGLIST: Regenerating molecular sieve 4A (David Kelly) --__--__-- Message: 1 From: Jacob Zabicky (zabicky@bgumail.bgu.ac.il) To: everybody@orglist.net Date: Sun Jul 14 2002 - 09:27:04 EDT Subject: Re: ORGLIST: Regenerating molecular sieve 4A Hello Andrea, Yours is a very interesting question. It's worth trying a small amount of the stuff, say 0.5 g, and see how dry does it get (wt. loss), and whether its morphology changes. A possible scenario is this: Water effectively absorbs the microwaves. so a very hot local spot may be produced. Say that happens in a small spot inside the molecular sieve, rising the temperature to several hundred deg. C, over the critical temperature of water. The highly compressed gaseous water may break the crystalline structure and the stuff may literally pop out. But it may be a very placid process too. Just try it! All the best, Jacob x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x Prof. Jacob Zabicky Institutes for Applied Research Ben-Gurion University of the Negev Private: POB 12366, Beer-Sheva 84863 POB 653, Beer-Sheva 84105, ISRAEL Tel. +972-8-6496792 http://profiler.bgu.ac.il/site/main.cfm Tel. +972-8-6461271/6461062/6472754 Fax. +972-8-6472969 x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x-x --__--__-- Message: 2 From: David Kelly (KellyDR@Cardiff.ac.uk) To: everybody@orglist.net Date: Mon Jul 15 2002 - 14:00:23 EDT Subject: Re: ORGLIST: Regenerating molecular sieve 4A Copper sulphate impregnated molecular sieves? Are you sure this is not silica gel? To dry sieves efficiently you need to use a vaccum oven/pistol and circa 250 degrees C for 3+ hours. Any attempt to dry in the atmosphere leaves them wet. We have taken circa 100g of oven dried sieves and subjected them to heating in vacuum. In the early stages sufficient water was removed to wet the inside of the apparatus. Good drying agents require severe drying conditions to make them anhydrous. While we are on lab myths. Drying magnesium turnings in an ordinary oven is also totally pointless. Good luck DaveDr David R. Kelly Dept. of Chemistry, Cardiff University, PO Box 912, Cardiff, CF10 3TB, UK Phone 02920-874063: Fax 02920-874030 Mobile 07971-240448: Home 02920-610891 Web page http://www.cf.ac.uk/uwc/chemy/staff/kelly.html For the "Elephants and Butterflies" article see http://www.semiochemica.org.uk/articles/articlesidx.html BEST Record: http://expertise.cos.com/cgi-bin/exp.cgi?id=498275 For catalysis see http://www.chemsoc.org/cgi- shell/events/nforedisp.pl?ID=551 Cardiff University is the public name of the University of Wales, Cardiff, a constituent institution of the University of Wales. --__--__-- Digest #45 Today's Topics: 1. Griffith-Prions (Shu G. Chen) --__--__-- Message: 1 From: "Shu G. Chen" <sxc59@po.cwru.edu> To: <everybody@orglist.net> Date: Thu, 18 Jul 2002 00:28:39 -0500 Subject: ORGLIST:Griffith-Prions Does anyone knows the first name for Griffith who first proposed "protein only" hypothesis for prions? ------------------------------------------------- Shu G. Chen, Ph.D. Institute of Pathology Case Western Reserve University 2085 Adelbert Road Cleveland, OH 44106-4907 Tel: 216-368-8925 Fax: 216-368-2546 E-mail: sxc59@po.cwru.edu --__--__-- Digest #46 Today's Topics: 1. polyamide and a diamine reaction (Guzin Ozgel) 2. help needed on assay protocols for metals using 5-bromoanthranilic acid (sam) --__--__-- Message: 1 Date: Fri, 19 Jul 2002 06:37:41 -0700 (PDT) From: Guzin Ozgel <gzgel@yahoo.com> To: everybody@orglist.net Subject: ORGLIST:polyamide and a diamine reaction Dear All, I have got an amide in my hand obtained by reacting 2,6-dichloro-p-phenylenediamine and benzoyl chloride in triethylamine and chloroform solution. What molecule would I obtain if I would react it with ortho-phenylenediamine in triethylamine preceded by a reaction of trichloroacetic anhydride reaction? If you have ideas to suggest me, I would appreciate your effort. thanks and regards, Guzin Ozgel Marmara University, Turkey --__--__-- Message: 2 From: "sam" <ttn_ponraj@sancharnet.in> To: <everybody@orglist.net> Date: Mon, 22 Jul 2002 07:07:55 +0530 Subject: ORGLIST:help needed on assay protocols for metals using 5-bromoanthranilic acid Dear all I am making 5-bromoanthranilic acid and 5-bromoindoxyl acetate. For the first one there is a reference in Merck Index saying it is used for determination of Cobalt, Nickel, copper and zinc. I would like to supply = the assay protocol along with the chemical. Can somebody help me find = the assay protocol for the determination of these metals using = 5-bromoanthranilic acid. Second one is a chromogenic substrate for = esterases. Also kindly contact me for buying these chemicals as I could = offer the best price. Looking forward thank you sam --__--__-- |
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