ABC26OR1068 · Photochemical Reactions
Subject: Organic Chemistry · Chapter: Photochemical Reactions · Topic: Photocycloaddition · Exam: NET JUNE 2011 · Marks: 2 · Difficulty: Medium
The concerted photochemical reaction between two olefins leading to a cyclobutance ring is :
(a)$\pi 2 \mathrm{s}+\pi 2 \mathrm{a}$ cycloadition
(b)$\pi 2 \mathrm{s}+\pi 2 \mathrm{s}$ cycloaddition
(c)$\sigma 2 s+\sigma 2 s$ cycloaddition
(d)$\pi 2 \mathrm{s}+\sigma 2 \mathrm{a}$ cycloaddition
Answer
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Explanation
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