作者:Teppo O. Leino、Marcus Baumann、Jari Yli-Kauhaluoma、Ian R. Baxendale、Erik A. A. Wallén
DOI:10.1021/acs.joc.5b02271
日期:2015.11.20
The key intermediate, 6-methylazulene, was synthesized from readily available and inexpensive starting materials in 63% yield over two steps. The methyl group of 6-methylazulene was then used as a synthetic handle to introduce different substituents at the 6-position via two different methods. Subsequently, the 1- and 3-positions were substituted with additional functional handles, such as formyl
我们已经开发出一种短的,通用的合成途径来合成1,3,6-三取代的天青石。关键中间体6-甲基methyl烯是由容易获得且廉价的起始原料合成的,分两步合成,产率为63%。然后,通过两种不同的方法,将6-甲基azulene的甲基用作合成手柄,以在6位引入不同的取代基。随后,将1-位和3-位替换为其他官能团,例如甲酰基,氯甲基酮和碘化物。通过制备三种不同产品的集合,证明了合成路线的效率,在七个步骤中收率最高的是33%。