A Facile Synthesis of Methyl 5-Amino-6-chloro-2H-1-benzopyran-8-carboxylate Derivatives
摘要:
Methyl 6-chloro-5-pivaloy lamino-2H-1-benzopyran-8-carboxylate (4d) was prepared in good yield as a result of' the thermal cylcization of methyl 5-chloro-4-pivaloy lamino-2-propargyloxy benzoate (3d) using N.N-diethylaniline as a solvent.
A facile gold(I)-catalysed intramolecular alkyne hydroarylation approach to methyl 5-amino-2H-1-benzopyran-8-carboxylate derivatives
作者:Neil R. Curtis、Jeremy C. Prodger、Geracimos Rassias、Andrew J. Walker
DOI:10.1016/j.tetlet.2008.08.022
日期:2008.10
A high yielding and selective method for producing methyl 5-amino-2H-1-benzopyran-8-carboxylate derivatives via gold(I)-catalysed intramolecular alkyne hydroarylation has been developed.
已经开发了通过金(I)催化的分子内炔烃加氢芳基化反应制备5-氨基-2 H -1-苯并吡喃-8-羧酸甲酯衍生物的高产率和选择性方法。