Which of the following is true about the stereochemistry of SN1 reaction? Inversion of configuration at the electrophilic center       Slightly more retention than inversion at the electrophilic center       Slightly more inversion that retention at the electrophilic center       Retention of configuration at the electrophilic center

Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. CH3 CH3 H3PO4 HO, + H3C CH3 HO HO First stage in synthesis of the epoxy and polycarbonate ingredient bisphenol-A You do not have to consider stereochemistry. Include all valence lone pairs in your answer. In cases where there is more than one answer, just draw one.

Identify the main site(s) of bromination in the following reaction. right ring, ortho/para to substituent right ring, meta to substituent left ring, meta to substituent left ring, ortho/para to substituent Br₂ FeBr3

1,5-methano[10]annulene is stable at room temperature, but [10]annulene is not stable at room temperature.Why is there a difference in reactivity?

Cyclopentadienyl anion (shown) has the following characteristic. O it is an anion with six π electrons, meeting the Hückel rule for aromaticity O it is not aromatic because it has only four electrons and the tetrahedral carbon prevents cyclic conjugation O it is an anion with six electrons, meeting the Hückel rule for anti-aromaticity O it is an anion with four electrons, meeting the Hückel rule for aromaticity

15. The two hexene isomers react with Br2. Draw the key reaction intermediates and the product(s); use arrow pushing to explain the stereochemical outcomes of the reactions Intermediate Final Products Br2 Intermediate Final Products Br2

How many stereocenters does the final product have for this reaction? how many stereoisomers may it form?

Rank the following compounds in order of increasing reactivity during an electrophilic substitution reaction

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I was able to answer correctly but I would like more clarrifiation on why this is the correct answer.