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Payvasthoi asikli

Payvasthoi asikli, p a yv a s t ho i  g a y r i tasalsul, pay­va s t h o i alo f a t k, payvastdoi organikie, ki molekulaashon az silsilai «kushod» iborat ast. Payvasthoi asiklie, ki dar onho atomhoi karbon dar yak khat joygir shudaand (masalan, m-buggan GH3—S&2—SN*—SNe), payvasthoi normali va Payvasthoi aromatie, ki dar onho atomhoi karbon shokha-shokha joygir shudaand (masalan, spirti izobutil cHa/CH””*SN*ON), izopayvastho nomida meshavavd. Darozii silsilai Payvasthoi aromati gunogun ast.

Dar ayni zamon karbogidridi silsilaash iborat az 100 atomi karbon hosil karda shudaast: SN*(SN*)mSNz. Payvasthoi aromati va sikli ba yakdigar tabdil yofta (metavonand. Masalan, az asetilen (CHeGH) dar yak sharoit karbogidridi  asiklii vililasetilen (SN2– =SN—SISN) va dar sharoiti digar karbogidridi siklii benzol (CefHe) hosil kardan mumkin ast. Ba karbogidridhot aromati (benzol va gomologhoi on) tabdil yoftani karbogidridkhoi asiklii ser ahamiyati kaloni amali dorad. Inchunin yakchand usulhoi az payvasthoi sikli hosil kardani Payvasthoi aromati niz malumand. Masalan, az oksidi etilen dar zeri tasiri ob hosil kardani etilenglikol:

ON*—SN2 4- NgO

Spirtho, ketonho, kislotaho, aminho va digar payvasthoe, ki hosilahoi karbogidridhoi ser yo noser silsilaashon kushod meboshand.ba Payvasthoi aromati mansuband. Manbai asosii Payvasthoi aromati neft va mahsuloti korkardi on ba shumor meravad. Bisyori Payvasthoi aromati dar sanoat az etilen va gomoglohoi on, aksetilen, oksidi karbon va digar payvastho hosil mekunand.

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