Regiodivergent Rhodium(I)-Catalyzed Azide–Alkyne Cycloaddition (RhAAC) To Access Either Fully Substituted Sulfonyl-1,2,3-triazoles under Mild Conditions
A regiodivergent Rh(I)-catalyzed azide–alkynecycloaddition (RhAAC) was developed for the synthesis of both fully substituted 4-sulfonyl-1,2,3-triazoles and 5-sulfonyl-1,2,3-triazoles in high regioselectivities and yields undermildconditions in one step. Nonmetallic sulfur(II) or sulfur(VI) could efficiently control the regioselectivity of RhAAC reactions by chelation or nonchelation mechanisms to
A regioselective method to access fully substituted 5‐trifluoromethylthio‐1,2,3‐triazoles and 5‐thio‐1,2,3‐triazoles from the internal alkynyl trifluoromethyl sulfides and internal thioalkynes by a rhodium(I)‐catalyzed azide‐alkyne cycloaddition (RhAAC) reaction under mild conditions has been developed. This approach features good compatibility with water and air, a broad substrate scope, good functional