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Rhodium Catalyzed Synthesis of Benzopyrans via Transannulation of N-Sulfonyl-1,2,3-triazoles with 2-Hydroxybenzyl Alcohols
D. Yadagiri, M. Chaitanya, A. C. S. Reddy, P. Anbarasan; Org. Lett. 2018, 20, 3762. Link