作者:Harold Hart、Chung-yin Lai、Godson Chukuemeka Nwokogu、Shamouil Shamouilian
DOI:10.1016/s0040-4020(01)87696-1
日期:1987.1
with one or two equivalents of -butyllithum and various dienes (furans, pyrroles, cyclopentadienes, fulvenes) to form mono- or bis-cycloadducts. Highly substituted arenes can be obtained by removing the oxygen or nitrogens bridges from the furan or pyrrole adducts. By choice of conditions, two identical or two different rings can be fused to the di-aryne epuivalent. Improved short syntheses of permethylnaphthalene
1,2,4,5-四溴苯和类似的萘并萘烷与一或两当量的丁基锂和各种二烯(呋喃,吡咯,环戊二烯,富烯)反应形成单环或双环加合物。通过从呋喃或吡咯加合物中除去氧或氮桥,可以获得高度取代的芳烃。通过选择条件,可以将两个相同或两个不同的环稠合至二芳烃表位。描述了改进的全甲基萘,-蒽和-并四苯的短合成方法。提出了一种新的三苯撑合成。