The plaub chiral centers hauv qabzib qhia tias muaj ntau li kaum rau (2 4) stereoisomers muaj tsab cai no. Cov no yuav tshwm sim raws li yim lub diastereomeric khub ntawm enantiomers, thiab qhov kev sib tw thawj zaug yog los txiav txim siab seb yim leej twg sib raug rau cov piam thaj.
Koj pom qhov chaw chiral ntawm qabzib li cas?
- middle plaub carbon atoms nyob rau hauv cov saw hlau yog chiral vim lawv txhua tus nyias muaj nyias qhov sib txawv nrog rau lawv. Lawv pom nyob rau hauv tus cwj mem liab saum toj no. - Yog li, tus naj npawb ntawm chiral carbon atoms hauv qabzib yog 4.
Yuav ua li cas koj thiaj nrhiav tau cov chaw chiral?
Tus yuam sij rau kev nrhiav chiral carbons yog nrhiav cov pa roj carbon monoxide uas txuas rau plaub qhov sib txawv. Peb tuaj yeem tshem tawm cov pa roj carbon monoxide tam sim ntawd uas cuam tshuam nrog ob daim ntawv cog lus, lossis muaj ob lub hydrogen txuas. Muab qhov no, peb pom tias muaj peb chiral carbons.
Puas muaj pes tsawg chiral carbons nyob rau hauv cyclic qabzib?
Cov saw qhib muaj plaub chiral carbons thiab daim ntawv cyclic ntawm qabzib muaj tsib chiral carbons.
muaj pes tsawg lub chaw chiral?
Muaj rau lub chaw chiral uas tau sib koom ua plaub pawg sib txawv. Nco tseg: Chiral chaw tseem hu ua stereogenic chaw. Thaum daim iav duab ntawm achiral carbon yog tig, thiab cov qauv tuaj yeem ua raws li ib leeg, lawv daim iavcov duab tau hais tias yog achiral.
