The present invention relates to novel 1,3-dihydrofuro[3,4-c]pyridines which are useful intermediates in the synthesis of pyridoxines and a method for their preparation by cobalt(I) complex-catalysed [2 + 2 + 2]-cycloaddition of di-[(3-dimethyl-C1-4-alkoxysilyl)2-propynyl)] ethers with acetonitrile.
本发明涉及新型1,3-二氢
呋喃[3,4-c]
吡啶,该
吡啶是有用的中间体,用于合成
维生素B6(
吡哆醇),以及一种通过
钴(I)配合物催化的[2 + 2 + 2]-环加成反应,将二[(3-二甲基-C1-4-烷氧基
硅基)-2-
丙炔基]醚与
乙腈制备它们的方法。