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Messages 1250 - 1279 of 3940   Oldest  |  < Older  |  Newer >  |  Newest
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1250
can somebody tell me the method to convert a diol to aldehye with one carbon less. cant use strong oxidising agent. thank u...
talktostrangers2000
talktostrang...
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Mar 5, 2004
12:58 pm
1251
is me enter to this milis...
smuntri_18
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Mar 9, 2004
9:00 am
1252
hi frnds can anyone plz tell me during crossed aldol condensation bw an aldehyde and a ketone it is the alpha hydrogen of ketone that is extracted by the base...
ankur khera
mastermindankur
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Mar 9, 2004
5:11 pm
1253
dear ankur during base catalysed crossed aldol reaction, a ketone will generally act as nucleophile because the addition of an enolate to their carbonyl double...
sandy sharma
talktostrang...
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Mar 10, 2004
12:57 pm
1254
sandy sharma <talktostrangers2000@...> wrote:dear ankur during base catalysed crossed aldol reaction, a ketone will generally act as nucleophile because...
paresh patel
paresh786india
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Mar 10, 2004
3:47 pm
1255
please I want to know the best method for drying acetone ... Do you Yahoo!? Yahoo! Search - Find what you’re looking for faster. [Non-text portions of this...
ahmed ragaa
a_ragaa20
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Mar 11, 2004
7:16 pm
1256
polyester manufactures are choosing monomers terephthalic acid & ethylene glycol why?...
sureshpet2000
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Mar 13, 2004
7:49 am
1257
i want to know in making of polyester as yarn one monomer is always terephthallic acid which is a supstituted or not, which type of supstitutions stablise...
suresh r
sureshpet2000
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Mar 13, 2004
8:10 am
1258
I work in a chemical plant where we manufacture fatty alcohols. Recently we have had steryl aldehyde contamination in our C18 fatty alcohols. Does anyone know...
cognisqclab
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Mar 14, 2004
3:59 pm
1259
This group is about Chemistry and all the areas related with Chemistry (Physics, Maths, Biology, Geology, Engineering). We are doing Chemistry in Spain, South...
Juan José Serrano...
jjserpe
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Mar 14, 2004
7:05 pm
1260
Hi I am a student of second year org.chem. I wuld like to kno is it important in the real world to learn all the mechanisms of reaction. Do u actually ever...
eltonaleksi
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Mar 15, 2004
3:27 am
1261
Hi, Knowing mechanisms of all reactions is impossible. But organic chemistry uses some basic set of rules based on facts on which mechanisms are proposed. So...
govindaraji senthil
gsenth5
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Mar 15, 2004
7:49 am
1262
In common, acetone is dried over anhydrous K2CO3, and then distilled. Qingle Zeng...
Qingle Zeng
qinglezeng
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Mar 17, 2004
5:20 am
1263
My question is how does UV specta depend on conjugation. And why is it that dimesityl does not absorb at about same high wave length as biphenol ( since they...
eltonaleksi
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Mar 18, 2004
3:55 am
1264
... is me enter to this milis ... Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/organicchemistry/ To unsubscribe...
Y. Wood
lignocell
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Mar 18, 2004
10:47 am
1265
Hi this link should answer most of what you need to know :) http://www.chem.umb.edu/chemistry/orgchem/254_molecular_modeling_lab. pdf ... is ... as...
cerebrumuk
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Mar 18, 2004
11:14 am
1266
Thanks for your help but thats what I need it for! :)...
eltonaleksi
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Mar 18, 2004
4:36 pm
1267
Hi there, Just wondering if someone can tell me why organic compounds like to bind to organophilic surfaces such as polyamides bonding to ammonium exchanged...
macd0060
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Mar 25, 2004
5:57 am
1268
hai guys i am from india, and i joined your group now it is our group , can you introduce me. i am going to finish my M.Sc chemistry....
rajeshandkhanna
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Mar 25, 2004
11:11 pm
1269
hai guys yes as our friend senthil says, it is impossible to keep all mechanisms in memory, but it should me read at once to get into the knowledge of...
rajeshandkhanna
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Mar 25, 2004
11:32 pm
1270
I'm looking to hire an ANALYTICAL CHEMIST with experience running GC and GS/MS. Knowledge of semi-volatiles, pesticides, herbicides, and PCB's. send all...
aesatlanta2003
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Mar 26, 2004
4:05 am
1271
I'm a computer engineer with experience in the Bio field. I'd like to get some market information for a product candidate for a low cost (less than about...
george dorian
george_vvv
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Mar 26, 2004
5:41 pm
1272
hi i am also from Nagpur, Maharashtra,India. I am doing Chemical engg.from LIT.Nagpur ________________________________________________________________________...
sumit sontakke
sumit_lit
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Mar 28, 2004
4:30 am
1273
Hello, In India, you may find this person to be useful: Makarand Waikar mwaikar@... He is the representative for the online database service, STN...
Frosty Mcguire
frostymcguire
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Mar 29, 2004
5:19 pm
1274
hello friends hai friends, I hope things are going well for you all .i am watching that we all going well with exchanging questions thatis very good, but we...
rajeshandkhanna
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Mar 30, 2004
5:01 pm
1275
... watching ... go ... actually ... work...
zezo2003_20044
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Apr 1, 2004
7:34 pm
1276
Hi there, Just wondering if someone can tell me why organic compounds like to bind to organophilic surfaces such as polyamides bonding to ammonium exchanged...
Ian Macdonald
macd0060
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Apr 2, 2004
1:39 am
1277
Dear Ian Mcdonald You are question is not so clear but I try to answer you ....may not accurate as such surface chemistry is very complicated. You must have...
govindaraji senthil
gsenth5
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Apr 2, 2004
8:20 am
1278
Hello. My name is Juanjo Serrano and I studied Chemistry in Universidad de Valencia (Spain). Now I worked at Theoretical Chemistry Group. I created two groups...
Juan José Serrano ...
jjserpe
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Apr 2, 2004
10:33 pm
1279
Thanks for that, it certainly clears up the problem i was having, Cheers, Ian ... _________________________________________________________________ What's your...
Ian Macdonald
macd0060
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Apr 5, 2004
4:06 am
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