Hua
2,6-Di-tert-butyl-4-methylpyridine
Tātai Hanganga
Te ahua: te karaihe acicular ma
Kiato: 1,476 g/cm3
Ira whakarewa: 31-32 ℃
Ira kohua: 148-153℃ (12.6kPa)
Taupū Reractive: N20 /D 1.4763(marama)
Ihi hiko: 183 °F
Nga tikanga rokiroki: 2-8°C
Te whakarea kawatanga (pKa): 6.88±0.10(Whakaahua)
Raraunga Haumaru
No nga utanga whanui
Waehere ritenga: 2942000000
Te utu utu taake kaweake (%) : 13%
Taupānga
Te takawaenga waihanga pararopi, he turanga aukati, kore-nucleophilic e wehewehe ana i waenga i te Brnsted (protonic) me te waikawa Lewis.Ka taea te huri tika i nga hua nui o te aldehydes1 me te ketones1,2 ki nga triflates vinyl.
Ko te 2,6-Di-tert-butyl-4-methylpyridine he pūhui pararopi me te tātai rāpoi C14H23N, he takawaenga nui i roto i te whakahiato pararopi, te nuinga e whakamahia ana i roto i nga takawaenga rongoa, te whakahiato waro, nga whakarewa pararopi, ka taea hoki te whakamahi ki te hanga tae, pesticide. hanga me nga kakara, etc.
Tikanga whakaputa
1. Hangaia te 2,6 di-tert-butyl-4-methylbenzyl trifluoromethanesulfonate I roto i te ipu toru 100-mL me te ngongo whakauru hauota, he kooronga pehanga tonu, he pae whakakorikori hiko me te kaitao hukapapa me te ngongo maroke, tāpirihia te 24.2 g (0.2 mol) o trimethylethyl phthalide chloride me te 3.7 g (0.05 mol) o tert-butanol.I whakawerahia te ranunga tauhohenga i roto i te pati hinu ki te 85°C.Katahi ka tapirihia te 15 g (0.1 mol) o te waikawa trifluoromethanesulfonic mo te neke atu i te 15 meneti.I haere tonu te tauhohenga mo te 10 meneti, ka whakamataohia te hua tauhohenga parauri marama i roto i te pati hukapapa ka ringihia ki te 100 ml o te ether makariri.I tātarihia te parapara parauri ka whakamaroke kia 9.6 g (54%) o te tote buzz kua roa.(Kaore he purenga e hiahiatia ana: mo te takahanga e whai ake nei, whakamauaruatia kia rua nga wa mai i te chloroform ki te waro tetrachloride 3:1) ki nga tioata ahua ngira kore tae.
2. Te Whakaritenga o te 2,6-Di-tert-butyl-4-methyl-vizine I raro i te whakakorikorihia, ko te whakatārewatanga o te 10 g (0.028 mol) o te tote maru o te vizine i roto i te 200 mL o te 95% te waihano i whakamatao ki te 60°C. kotahi te tapiri ki te 100 mL o te haukini kua whakamatao ki te 60°C i roto i te ipu kari-raro 1-rita.I haere tonu te tauhohenga i te 60°C mo te 30 meneti me te 40°C mo te 2 haora, i taua wa ka rewa te whakatārewatanga.Na, ka ringihia te ranunga tauhohenga ki te 500 ml o te wairewa konutai waikawa 2% kua whakamahanahia ki te pāmahana rūma.He mea tango ki te .4-100 ml o te petane, nga tangohanga whakakotahi, 25 ml o te wairewa konutai konutai kua horoia kua horoia, 100 ml o te kukū whakaeto hurihuri pentana.
