[see reaction]. A novel procedure for the synthesis of an indole skeleton was developed. Treatment of a cyclohexenol derivative having a silyloxymethyl group at the 2-position with N-tosyl-o-bromoaniline in the presence of Pd2dba3*CHCl3 and (S)-BINAPO gave compound 6a with 84% ee in 75% yield. Compound 6a was converted into 11, which was treated with Pd(OAc)2 and Me(2)PPh in the presence of Ag2CO3
[请参阅反应]。开发了一种合成
吲哚骨架的新方法。在Pd 2 dba 3 * CHCl 3和(S)-BINAPO存在下,用N-
甲苯磺酰基-邻-
溴苯胺处理在2-位具有甲
硅烷基氧甲基的
环己烯衍
生物,得到ee为84%的化合物6a,产率为75%。化合物6a转化为11,然后在Ag2CO3存在下用Pd(OAc)2和Me(2)PPh处理,得到二氢
吲哚衍
生物12。从12开始,我们成功地合成了(-)-脱氢tubifoline和( -)-茶碱