Cov txheej txheem:

Dab tsi ua rau pab pawg tiv thaiv zoo?
Dab tsi ua rau pab pawg tiv thaiv zoo?

Video: Dab tsi ua rau pab pawg tiv thaiv zoo?

Video: Dab tsi ua rau pab pawg tiv thaiv zoo?
Video: xum yog tus maiv siab dawb/ Maiv thoj/ nkauj taw. tshiab 2023 2024, Kaum ib hlis
Anonim

Tiv thaiv pab pawg yog siv nyob rau hauv synthesis rau ib ntus npog cov yam ntxwv chemistry ntawm kev ua haujlwm pab pawg vim nws cuam tshuam nrog lwm cov tshuaj tiv thaiv. A pab pawg tiv thaiv zoo yuav tsum tau yooj yim muab tso rau, yooj yim rau tshem tawm thiab nyob rau hauv siab yielding tshua, thiab inert rau tej yam kev mob ntawm cov tshuaj tiv thaiv yuav tsum tau.

Ntawm no, peb yuav tiv thaiv pawg cawv li cas?

Piv txwv

  1. Cov pab pawg tiv thaiv silyl ether tuaj yeem raug tshem tawm los ntawm cov tshuaj tiv thaiv nrog cov kua qaub aqueous lossis fluoride ion.
  2. Los ntawm kev siv cov pab pawg tiv thaiv Grignad reagent tuaj yeem tsim thiab ua rau muaj kev cuam tshuam ntawm cov cawv halo. 1) Tiv thaiv Cawv.
  3. 2) Tsim cov Grignard Reagent.
  4. 3) Ua qhov Grignard Reaction.
  5. 4) Kev tiv thaiv.

Tom qab ntawd, lo lus nug yog, lub hom phiaj ntawm pab pawg tiv thaiv yog dab tsi? Tiv thaiv pab pawg yog siv nyob rau hauv synthesis rau ib ntus npog cov yam ntxwv chemistry ntawm kev ua haujlwm pab pawg vim nws cuam tshuam nrog lwm cov tshuaj tiv thaiv. Ib qho zoo tiv thaiv pab pawg yuav tsum tau yooj yim muab tso rau, yooj yim rau tshem tawm thiab nyob rau hauv siab yielding tshua, thiab inert rau tej yam kev mob ntawm cov tshuaj tiv thaiv yuav tsum tau.

Tsis tas li ntawd, dab tsi yog thaiv pawg?

Thaiv Pawg Txhais: Thaiv pab pawg , hauv cov tshuaj tsw qab hloov pauv, yog qhov ua haujlwm pab pawg uas tuaj yeem ntsia tau yooj yim thiab uninstalled.

Dab tsi yog ib pawg silyl?

Silyl ethers yog a pab pawg ntawm cov tshuaj sib txuas uas muaj cov atom silicon covalently bonded rau alkoxy pab pawg . Cov qauv dav dav yog R1R2R3Si-O-R4 qhov twg R4 yog alkyl pab pawg lub aryl pab pawg . Silyl ethers feem ntau yog siv los tiv thaiv pab pawg rau alcohols hauv organic synthesis.

Pom zoo: