2-3-Dimethyl pyrazine（CAS#5910-89-4）

Hoʻolauna

ʻO 2, 3-Dimethylpyrazine kahi hui kūlohelohe. ʻO kēia ka hoʻolauna ʻana i kekahi o kāna mau waiwai, hoʻohana, hana hana a me ka ʻike palekana.

ʻAno maikaʻi:

ʻO 2, 3-Dimethylpyrazine he paʻa kala ʻole i ka melemele. Loaʻa iā ia ka ʻala o ka acetone a i ʻole nā ​​ethers a hiki ke hoʻoheheʻe ʻia i loko o nā waiʻona a me nā solvents ether.

E hoʻohana:

Hoʻohana nui ʻia ʻo 2, 3-Dimethylpyrazine i mea hoʻomaka no ka synthesis organik. Hiki ke hoʻohana ʻia ma ke ʻano he catalyst no ka esterification, carboxylation a me ka enolation ma lalo o nā kūlana alkaline.

Hanana:

2, 3-dimethylpyrazine hiki ke hoʻomākaukau ʻia e SN2 hoʻololi i ka ethyl iododide a i ʻole ethyl bromide me 2-aminopyrazine. Hoʻokō pinepine ʻia nā ʻano hana i mua o kahi ʻano alkaline, e like me ka sodium ethoxide. Ma hope o ka hopena, loaʻa ka huahana i koho ʻia e ka crystallization a i ʻole ka unuhi ʻana.

ʻIke palekana:

2, 3-Dimethylpyrazine he haʻahaʻa haʻahaʻa ma lalo o nā kūlana hoʻohana maʻamau. Ma ke ʻano he kemika, hiki i ka hoʻopili ʻana me ka ʻili, nā maka, a me ka ʻōpū hanu e hoʻonāukiuki. Pono e hahai ʻia nā ʻōkuhi palekana maʻamau e like me ka hoʻohana ʻana i nā mīkina lima lima pale, nā goggles, a me nā mea pale hanu i ka wā e hoʻohana ai. Inā loaʻa ka pilikia a i ʻole ka inhalation, holoi a wehe koke i ka wahi i hoʻopilikia ʻia a ʻimi i ka ʻōlelo aʻoaʻo olakino.