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To his left, the towering stack of solved problems felt like a tombstone for his confidence. To his right, a fresh notebook lay empty. "One more attempt," he whispered.
That was the key. His previous attempts had assumed kinetic control. He erased three pages of work. His fingers cramped. He redrew the transition state, this time accounting for the bulky base mentioned in the hint.
Aryan had already survived those. But now, he was in the dark forest of Stereoisomerism .
He didn't cheer. In the world of M.S. Chauhan, solving one problem meant ten more lay in ambush. But for a moment, he leaned back. The book lay open, its pages worn and coffee-stained. It wasn't just a problem set. It was a patient, merciless teacher. It had broken his arrogance on the rocks of aromatic nucleophilic substitution and rebuilt it with the logic of pericyclic reactions .
Outside, the sun was rising. Aryan smiled. Tomorrow: Carbohydrates . But tonight, he had earned his sleep, having walked through the labyrinth and come out with all four stereoisomers accounted for.
Aryan stared at the problem on Page 217. It was the kind of question M.S. Chauhan specialized in: a deceptively simple reactant, a set of brutal reagents, and a demand for the final product’s stereochemistry.