for boron‐promoted ether interchange reaction of methoxynitroarenes is reported. A series of methoxynitroarenes and alcohols, including primary, secondary, as well as tertiary alcohols, reacted smoothly in moderate to good yields under the optimized reaction conditions. This protocol is an operationally simple and scalable strategy for the synthesis of alkyl nitroaromatic ethers.
A series of 2-anilino-1,6-dihydro-6-oxo-5-pyrimidinecarboxylic acids with various substituents was synthesized and evaluated in the rat passive cutaneous anaphylaxis test for antiallergic activity. High activity by intraperitoneal and oral administrations was observed for the 3-trifluoromethyl and 2-alkoxyanilino derivatives (64, 79, 81, 82 and 85). Structure-activity relationships are discussed.