Question 1
Which of the following best describes the stereochemistry of ring closure and the product for the following reaction?
◦ conrotatory;
trans -3,4-diethylcyclobutene
◦ conrotatory;
cis-3,4-diethylcyclobutene
◦ disrotatory;
trans-3,4-diethylcyclobutene
◦ conrotatory; 3,3-diethylcyclobutene
◦ disrotatory;
cis-3,4-diethylcyclobutene
Question 2
Which of the following best describes the stereochemistry of ring closure and the product for the following reaction?
◦ conrotatory;
trans -5,6-diethyl-1,3-cyclohexadiene
◦ disrotatory;
trans-5,6-diethyl-1,3-cyclohexadiene
◦ disrotatory; 5,5-diethyl-1,3-cyclohexadiene
◦ disrotatory;
cis-5,6-diethyl-1,3-cyclohexadiene
◦ conrotatory;
cis-5,6-diethyl-1,3-cyclohexadiene
Skin closure methods
Saturn’s Ring System
DNA Ring
Stereochemistry of the a-Amino Acids
Closed and Open Food Product Dating
Saturn and its Ring System "زحل ونظامها الدائري"