Product of the photochemical cyclization of (2E,4Z,6E)-2,4,6-octatriene. Of (2E,4Z,6Z)-2,4,6-octatriene. Concept introduction: In photochemical reactions, the orbitals of the HOMO of the excited state to determine the course of the reaction. The excited state HOMO has the opposite orientation of the outermost p orbitals compared to the HOMO of the ground state. As a result, the method of ring closure of a photochemical electrocyclic reaction is opposite to that of a thermal electrocyclic reaction for the same number of pie bonds. Photochemical electrocyclic reactions occur in a conrotatory fashion for a conjugated polyene with an odd number of pie bonds.

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Part A Give the IUPAC name and a common name for the following ether: CH3-CH2-O-CH2-CH2-CH3 Spell out the full names of the compound in the indicated order separated by a comma. Submit My Answers Give Up Part B Give the IUPAC name and a common name for the following ether: Spell out the full names of the compound in the indicated order separated by a comma. Submit My Answers Give Up

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Chapter 30.4, Problem 4P

Interpretation Introduction

Interpretation:

Product of the photochemical cyclization of (2E,4Z,6E)-2,4,6-octatriene. Of (2E,4Z,6Z)-2,4,6-octatriene.

Concept introduction:

In photochemical reactions, the orbitals of the HOMO of the excited state to determine the course of the reaction. The excited state HOMO has the opposite orientation of the outermost p orbitals compared to the HOMO of the ground state. As a result, the method of ring closure of a photochemical electrocyclic reaction is opposite to that of a thermal electrocyclic reaction for the same number of pie bonds.

Photochemical electrocyclic reactions occur in a conrotatory fashion for a conjugated polyene with an odd number of pie bonds.

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Part A Give the IUPAC name and a common name for the following ether: CH3-CH2-O-CH2-CH2-CH3 Spell out the full names of the compound in the indicated order separated by a comma. Submit My Answers Give Up Part B Give the IUPAC name and a common name for the following ether: Spell out the full names of the compound in the indicated order separated by a comma. Submit My Answers Give Up

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