Brief introduction of 35212-85-2

Reference of 35212-85-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.35212-85-2, Name is Methyl 3-aminobenzo[b]thiophene-2-carboxylate, molecular formula is C10H9NO2S. In a Article£¬once mentioned of 35212-85-2

Synthesis and Reactions of 2H-Benzothieno<3,2-d><1,3>oxazine-2,4(1H)-dione

The title compound 5 is synthesized by the reaction of the potassium salt of 3-aminobenzothiophene-2-carboxylic acid with phosgene.Compound 5 is readily alkylated to give 6 with methyl iodide, benzyl bromide, or propargyl bromide in the presence of sodium hydride.Reaction of 5 and 6 with nucleophiles follows specifically different pathways.Compound 5 is readily ionized to the isocyanate species 13 and subsequently reacts with methanol or methylamine to produce exclusively the carbamate 7 or ureido acid 9.The N-substituted derivative 6, in analogous reaction withmethanol or methylamine, produce exclusively the amino ester 8 or the amino amide 10.The N-benzyl derivative 6b reacts with the cyclic S-methylthiopseudourea 11 to give the tetracycle 12, a new ring system.