DIMETHYL CYCLOPROPANES

(listen-watch the video-lecture by Mr. Wintner at: Dimethyl Cyclopropanes )

Italian translation on Divini Campus/Documents CLIL folder

Answer these questions about dimethylcyclopropane collaboratively

KEYWORDS RECOGNITION

A molecule that is not congruent with its mirror image: chiral

una molecola che non è congruente con l'immagine speculare: chirale

Isomer class of 1,1 and 1,2 isomers of dimethylcyclopropane: constitutional isomers

nome della classe di isomeri 1,1 e 1,2 del dimetilciclopropano: isomeri costituzionali

A molecule with two substituents on the opposite sides: trans

una molecola con 2 sostituenti su lati opposti: trans  

A couple of mirror molecules that are not congruent: enantiomeric  pair

una coppia di molecole speculari che non sono congruenti: coppia enantiomerica o coppia enantiomeri 

An achiral configurational isomer:  cis-1,2-dimethylcyclopropane

un isomero configurazionale che sia achirale: cis-1,2-dimetilciclopropano

A molecule with two substituents on the same side: cis

 una molecola con due sostituenti dallo stesso lato: cis

MAKE SENSE THROUGH QUESTIONS

(Draw the requested molecules with Chem Sketch. Select the moleucul(s) and do Export... as gif image in that program. Then upload here the gif file).

Are all cis di-substituted rings achiral? Imagine and draw down some examples

draw as many constitutional isomers od dimethylciclopentane as you can

Why aren't there cis-trans diastereroisomers in acyclic alkanes?

Draw all 1-ethyl-2-methylcyclopentanes. How many enantiomeric couples are there? How many configurational isomers are there?

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