1 2 3 4 5-Pentamethylcyclopentadiene (CAS# 4045-44-7)

Selelekela

1,2,3,4,5-Pentamethylcyclopentadiene (eo hape e tsejoang e le pentaheptadiene) ke motsoako oa lintho tse phelang. Se latelang ke selelekela sa thepa ea eona, tšebeliso, mekhoa ea tlhahiso le tlhaiso-leseling ea polokeho:

Boleng:

1,2,3,4,5-Pentamethylcyclopentadiene ke mokelikeli o se nang mebala o nang le monko o khethehileng. Ha e teteane, ha e qhibilihe metsing, 'me ha e qhibilihe ka har'a metsoako e tloaelehileng ea tlhaho.

Sebelisa:

1,2,3,4,5-Pentamethylcyclopentadiene e na le mefuta e mengata ea likopo lefapheng la k'hemistri. E ka sebelisoa e le thepa ea ho qala le ea lipakeng tsa organic synthesis bakeng sa motsoako oa metsoako e meng ea manyolo.

Mokhoa:

1,2,3,4,5-Pentamethylcyclopentadiene e ka etsoa ka mekhoa e sa tšoaneng. Mekhoa e tloaelehileng ea ho itokisa e kenyelletsa tse latelang:

Karabelo ka cyclopentene: cyclopentene le li-reagents tsa methylation (tse kang methyl bromide) li sebelisetsoa ho itšoara tlas'a maemo a alkaline ho hlahisa 1-methylcyclopentene, ebe 1,2,3,4,5-pentamethylcyclopentadiene e entsoe ka methylation reaction.

Karabelo e entsoeng ka carbon-carbon bond e hlahisoang ke tšepe ea tšepe.

Lintlha tsa Tšireletseho:

1,2,3,4,5-pentamethylcyclopentadiene e na le likotsi tse itseng, 'me hoa hlokahala ho ela hloko polokeho ha u e sebelisa. Mona ke tse ling tsa likotsi tse ka bang teng tsa ts'ireletso:

Ke mokelikeli o tukang 'me o lokela ho behoa hole le malakabe a bulehileng le mehloli ea mocheso o phahameng.

Qoba ho hema mouoane oa eona, o sebelise sebakeng se nang le moea o motle, 'me u sebelise lisebelisoa tse loketseng tsa ho itšireletsa (mohlala, tšireletso ea ho hema).

E ka itšoara ka mabifi ka li-oxidizing tse matla le li-acid tse matla, tse bakang mollo kapa ho phatloha.

Ka kopo sebetsa ka hloko ha u e sebelisa le ho e sebetsana ho latela mekhoa e nepahetseng ea ts'ebetso ea ts'ireletso.