Synthesis of Chromane Derivatives via Indium-mediated Intramolecular Allenylation and Allylation to Imines

참고문헌 (Reference)

1 "Preparation of 3-vinylidene-4- To a solution of toluenesulfonimine 1 The solution was stirred at room temperaturefor 2 h until the reaction was completed The solution wasextracted with ether provided thedesired product 2 as a white solid 2 × ArH in tosyl group To a solution of toluenesulfonimine 3 The solution was stirred at room temperature for 5 huntil the reaction was completed provided the desired product 4 as a whitesolid 2 × ArH in tosyl group 2 × ArH in tosyl group The stereochemistry of 4 was established as cis by NOE analysis" 145 2 290 2 870 5 4 300 2 2 0 7 2 4 0 0 65 5 3 0 0980 2 5 196 3 588 5 2 500 2 0 4 1 0 2 3 4 2 5-1 1 7 5 4 204 2 7 154,