| Psychedelia.dk https://psychedelia.dk/forum/ |
|
| Nogen der ved hvad forskellen på disse 2 er? https://psychedelia.dk/forum/viewtopic.php?f=4&t=40010 |
Side 1 af 1 |
| Forfatter: | snubi [ 02 mar 2012 11:59 ] |
| Titel: | Nogen der ved hvad forskellen på disse 2 er? |
4-METHYLAMINOREX 3568-94-3 CIS-(+/-)-4-METHYLAMINOREX 29493-77-4 ? |
|
| Forfatter: | blazR [ 02 mar 2012 12:02 ] |
| Titel: | Re: Nogen der ved hvad forskellen på disse 2 er? |
Chemistry 4-Methylaminorex exists as four stereoisomers - (±)-cis and (±)-trans. The (±)-cis isomers are the form used recreationally. The (±)-cis isomers [racemate (1:1-mixture) of the (4R,5S)-isomer and the enantiomeric (4S,5R)-isomer] generally synthesized from dl-phenylpropanolamine in one step by cyclization with cyanogen bromide (sometimes prepared in situ by reacting sodium cyanide with bromine). Alternate synthesis routes generally involve more steps, such as replacing cyanogen bromide with sodium or potassium cyanate to form an intermediate and then reacting it with concentrated hydrochloric acid. A method reported in microgram replaced the need for a separate addition of hydrochloric acid by starting with the hydrochloride salt of the dl-phenylpropanolamine but side-products are noted. The (±)-trans isomers [racemate (1:1-mixture) of the (4S,5S)-isomer and the enantiomeric (4R,5R)-isomer] are synthesized in the same manner above but dl-norpseudoephedrine is used as the starting material instead. Fra Wikipedia: http://en.wikipedia.org/wiki/4-Methylaminorex |
|
| Forfatter: | snubi [ 02 mar 2012 12:16 ] |
| Titel: | Re: Nogen der ved hvad forskellen på disse 2 er? |
CIS-(+/-)-4-METHYLAMINOREX 29493-77-4 er altså at foretrække |
|
| Forfatter: | blazR [ 02 mar 2012 12:25 ] |
| Titel: | Re: Nogen der ved hvad forskellen på disse 2 er? |
Det skulle jeg mene, udfra det der står på wiki. //blazR |
|
| Side 1 af 1 | Alle tider er UTC + 1 time [DST ] |
| Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |
|