2-3-Dimethyl pyrazine (CAS#5910-89-4)

Selelekela

2, 3-Dimethylpyrazine ke motsoako oa lintho tse phelang. Se latelang ke selelekela ho tse ling tsa thepa ea eona, ts'ebeliso, mekhoa ea tlhahiso le tlhaiso-leseling ea polokeho:

Boleng:

2, 3-Dimethylpyrazine ha e na 'mala ho isa ho mosehla o tiileng oa kristale. E na le monko oa acetone kapa ethers 'me e ka qhibiliha ka joala le li-solvents tsa ether.

Sebelisa:

2, 3-Dimethylpyrazine e sebelisoa haholo-holo e le ntho e qalang bakeng sa motsoako oa manyolo. E ka sebelisoa e le sesosa sa esterification, carboxylation le enolation tlas'a maemo a alkaline.

Mokhoa:

2, 3-dimethylpyrazine e ka lokisoa ke SN2 sebaka sa ethyl iododide kapa ethyl bromide ka 2-aminopyrazine. Maemo a ho itšoara hangata a etsoa ka pel'a motsoako oa alkaline, joalo ka sodium ethoxide. Ka mor'a karabelo, sehlahisoa se lebisitsoeng se fumanoa ka crystallization kapa ho ntšoa.

Lintlha tsa Tšireletseho:

2, 3-Dimethylpyrazine e na le chefo e tlaase tlas'a maemo a tloaelehileng a tšebeliso. Joaloka k'hemik'hale, ho kopana le letlalo, mahlo, le tsela ea ho hema ho ka baka ho teneha. Melao ea ts'ireletso ea laboratoring e tloaelehileng joalo ka ho roala liatlana tsa ts'ireletso ea laboratori, likhalase le lisebelisoa tsa ts'ireletso ea phefumoloho li lokela ho lateloa ha li sebelisoa. Haeba motho a kopane kapa a hema ka phoso, hlatsoa kapa u tlose sebaka se amehileng hang-hang 'me u batle keletso ea bongaka.