Les perchlorates dephényl-3benzopyrylium-1 (1a) et (1i) réagissent exclusivement en position 2 avec l'éthanol et l'alcool isopropylique pour donner les acétals mixtes 2a, 3a et 3i. En présence de N-nucléophiles, lessels 1a et 1b donnent avec l'ammoniaque les amines secondaires symétriques 4a et 4b ou bis(phényl-3 2H benzopyranne-1 yl-2)amines, tandis qu'avec les amines aliphatiques en solution aqueuse
邻苯二甲酰基-1的高氯酸盐(1a)等(1i)在位置2排除了混合物2a,3a和3i。烯存在德Ñ -nucléophiles,LES SELS 1A等1B donnent AVEC L'ammoniaque LES胺次级线圈,symétriques图4a等4B OU双(苯基- 3 2 ħ benzopyranne -1-基-2)胺,tandis qu'avec LES胺aliphatiques烯溶液双甲酸酯水溶液5a和5b或oxy-2,2'bis(苯甲酰基-3 2 H苯并吡喃-1)。纪念日图5a和5b观察到的下颌骨在酸性条件下变化多样。
Revision of an enamine synthesis; the preparation and reactions of 2-morpholinoisoflav-3-ene.
作者:Francis M Dean、Rajender S Varmo
DOI:10.1016/s0040-4039(01)93291-5
日期:1981.1
The condensation of N-styrylmorpholine with salicylaldehyde does not give a product that can be oxidised to isoflavone; the product is N-morpholino-isoflav-3-ene which can be used to prepare other compounds related to isoflavan and upon oxidation gives 3-phenylcoumarin.
A Short-step Convenient Synthesis of 2-Phenylbenzofuran from 3-Phenylcoumarin
作者:Takeshi Kinoshita、Koji Ichinose
DOI:10.3987/com-05-10424
日期:——
The reaction mechanism of chemical conversion of (E)-beta-[2-hydroxylphenylcthylene]benzeneethanol into 2-phenylbenzofuran by DDQ, which involves loss of one carbon unit, was characterized and described. Five naturally occurring 2-phenylbenzofurans of not only the isoflavonoid but also stilbenoid origin were synthesized by use of this chemical scheme, which proved that this new scheme is a useful tool for quick synthesis of 2-phenylbenzofurans.