For the compound the stereochemical notations are · ABC26OR0758
Subject: Organic Chemistry · Chapter: Stereochemistry · Topic: Stereochemistry – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Easy
For the compound 
the stereochemical notations are
the stereochemical notations are(a)$2\mathrm{Z}, 4\mathrm{R}$
(b)$2\mathrm{Z}, 4\mathrm{S}$
(c)$2\mathrm{E}, 4\mathrm{R}$
(d)$2\mathrm{E}, 4\mathrm{S}$
Answer
Answer: D ✓ checked by 4AB · confidence medium
Explanation
At C-2 the higher-priority COOH is opposite C-4 across the double bond, so the alkene is 2E. At C-4, OH > C-3 (vinyl) > i-Pr; with OH hashed the priorities run clockwise but H points toward the viewer, so 4S (d).
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