CHEM 210 Study Guide - Trimethylsilyl, Bromine, Three Steps
Document Summary
Wednesday nov 31, 2012: for those rings with the possibility of a completely cyclic array of p-orbitals, provide the total number of electrons in the cyclic pi-systems of the following rings that would be used to assess their aromaticity or non-aromaticity. For those rings without a completely cyclic array of p-orbitals, write n/a (not applicable). 3 (b) each of these answer spaces is labeled with a roman numeral. I ii iii iv v vi vii viii (a) 3: using titanium tetrachloride as a lewis acid, compound a undergoes fast ionization to give the carbocation (shown below) at room temperature, which is an exceptionally low temperature for carbocation formation. Page 2 (a) what is the preferred sequence of steps? circle one: choice 1 choice 2. Regioselectivity is a crucial feature in electrophilic aromatic substitution reactions. Starting with benzene, there are two possible sequences for introducing chloro (cl) and acetyl (ch3co) substituents in a 1,4- (or para) relationship onto the aromatic ring.
