The present invention provides a method for promoting plant growth, which comprises treating a plant with a compound represented by the following Formula (1):
provided that a method for promoting plant growth which comprises treating plants with a compound corresponding to any one of the following (1) to (8) is excluded: (1) Methyl 4-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (2) Methyl 5-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (3) Methyl 6-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (4) Methyl 7-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (5) Ethyl 4-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (6) Ethyl 5-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, (7) Ethyl 6-(trifluoromethyl)benzo[b]thiophene-2-carboxylate, and (8) Ethyl 7-(trifluoromethyl)benzo[b]thiophene-2-carboxylate.
The organic superbase tBu‐P4 catalyzes methoxy‐alkoxy exchangereactions on (hetero)arenes with alcohols. The catalytic reaction proceeded efficiently with electron‐deficient methoxy(hetero)arenes as well as with a variety of alcohols, including 3‐amino‐1‐propanol, β‐citronellol, menthol, and cholesterol. An intramolecular version of this reaction furnished six‐ and seven‐membered ring compounds.