Tunable and Chemoselective Syntheses of Dihydro­iso­benzo­furans and Indanones via Rhodium-Catalyzed Tandem Reactions of 2‑Triazole-benzaldehydes and 2‑Triazole-alkylaryl Ketones

Two novel rhodium­(II)-catalyzed tandem reactions were developed for the synthesis of dihydro­isobenzo­furan and indanone derivatives from 2-triazole-benzalde­hydes and 2-triazole-alkylaryl ketones. Dihydro­isobenzo­furan derivatives were obtained in good yields with high regioselectivities when alcohols were used as nuclophiles in these reactions, whereas the replacement of the alcohol with water resulted in the diastereoselective formation of highly functionalized indanone derivatives