Enantioselective Intramolecular C−H Insertion of Donor and Donor/Donor Carbenes by a Nondiazo Approach

Abstract The first enantioselective intramolecular C−H insertion and cyclopropanation reactions of donor‐ and donor/donor‐carbenes by a nondiazo approach are reported. The reactions were conducted in a one‐pot manner without slow addition and provided the desired dihydroindole, dihydrobenzofuran, tetrahydrofuran, and tetrahydropyrrole derivatives with up to 99 % ee and 100 % atom efficiency.